conf: iterate video model children in parent function

Previously, we were passing the video "model" node to the "acceleration"
and "resolution" parsing functions and requiring them to iterate over
the children to discover and parse the appropriate node. It makes more
sense to move this responsibility up to the parent function and just
pass these functions the node that needs to be parsed.
Reviewed-by: NCole Robinson <crobinso@redhat.com>
Signed-off-by: NJonathon Jongsma <jjongsma@redhat.com>

src/conf/domain_conf.c

@@ -15259,25 +15259,15 @@ virDomainVideoDefaultType(const virDomainDef *def)
 static virDomainVideoAccelDefPtr
 virDomainVideoAccelDefParseXML(xmlNodePtr node)
 {
-    xmlNodePtr cur;
     g_autofree virDomainVideoAccelDefPtr def = NULL;
     int val;
     g_autofree char *accel2d = NULL;
     g_autofree char *accel3d = NULL;
     g_autofree char *rendernode = NULL;
 
-    cur = node->children;
-    while (cur != NULL) {
-        if (cur->type == XML_ELEMENT_NODE) {
-            if (!accel3d && !accel2d &&
-                virXMLNodeNameEqual(cur, "acceleration")) {
-                accel3d = virXMLPropString(cur, "accel3d");
-                accel2d = virXMLPropString(cur, "accel2d");
-                rendernode = virXMLPropString(cur, "rendernode");
-            }
-        }
-        cur = cur->next;
-    }
+    accel3d = virXMLPropString(node, "accel3d");
+    accel2d = virXMLPropString(node, "accel2d");
+    rendernode = virXMLPropString(node, "rendernode");
 
     if (!accel3d && !accel2d && !rendernode)
         return NULL;
@@ -15312,22 +15302,12 @@ virDomainVideoAccelDefParseXML(xmlNodePtr node)
 static virDomainVideoResolutionDefPtr
 virDomainVideoResolutionDefParseXML(xmlNodePtr node)
 {
-    xmlNodePtr cur;
     g_autofree virDomainVideoResolutionDefPtr def = NULL;
     g_autofree char *x = NULL;
     g_autofree char *y = NULL;
 
-    cur = node->children;
-    while (cur != NULL) {
-        if (cur->type == XML_ELEMENT_NODE) {
-            if (!x && !y &&
-                virXMLNodeNameEqual(cur, "resolution")) {
-                x = virXMLPropString(cur, "x");
-                y = virXMLPropString(cur, "y");
-            }
-        }
-        cur = cur->next;
-    }
+    x = virXMLPropString(node, "x");
+    y = virXMLPropString(node, "y");
 
     if (!x || !y)
         return NULL;
@@ -15415,6 +15395,7 @@ virDomainVideoDefParseXML(virDomainXMLOptionPtr xmlopt,
         if (cur->type == XML_ELEMENT_NODE) {
             if (!type && !vram && !ram && !heads &&
                 virXMLNodeNameEqual(cur, "model")) {
+                xmlNodePtr child;
                 type = virXMLPropString(cur, "type");
                 ram = virXMLPropString(cur, "ram");
                 vram = virXMLPropString(cur, "vram");
@@ -15427,8 +15408,18 @@ virDomainVideoDefParseXML(virDomainXMLOptionPtr xmlopt,
                     VIR_FREE(primary);
                 }
 
-                def->accel = virDomainVideoAccelDefParseXML(cur);
-                def->res = virDomainVideoResolutionDefParseXML(cur);
+                child = cur->children;
+                while (child != NULL) {
+                    if (child->type == XML_ELEMENT_NODE) {
+                        if (def->accel == NULL &&
+                            virXMLNodeNameEqual(child, "acceleration"))
+                            def->accel = virDomainVideoAccelDefParseXML(child);
+                        if (def->res == NULL &&
+                            virXMLNodeNameEqual(child, "resolution"))
+                            def->res = virDomainVideoResolutionDefParseXML(child);
+                    }
+                    child = child->next;
+                }
             }
             if (virXMLNodeNameEqual(cur, "driver")) {
                 if (virDomainVirtioOptionsParseXML(cur, &def->virtio) < 0)