qemuDomainValidateStorageSource: Relax PR validation

Rather than rejecting the user provided path and alias for the
managed PR reservation we will ignore the provided path. The
reason is that migration XML does contain path even for managed
reservations.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

src/qemu/qemu_domain.c

@@ -4616,19 +4616,11 @@ qemuDomainValidateStorageSource(virStorageSourcePtr src,
         }
     }
 
-    if (src->pr) {
-        if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_PR_MANAGER_HELPER)) {
-            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                           _("reservations not supported with this QEMU binary"));
-            return -1;
-        }
-
-        if (virStoragePRDefIsManaged(src->pr) && src->pr->path) {
-            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                           _("'path' attribute should not be provided for "
-                             "managed reservations"));
-            return -1;
-        }
+    if (src->pr &&
+        !virQEMUCapsGet(qemuCaps, QEMU_CAPS_PR_MANAGER_HELPER)) {
+        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                       _("reservations not supported with this QEMU binary"));
+        return -1;
     }
 
     return 0;
@@ -12855,6 +12847,7 @@ qemuDomainPrepareStorageSourcePR(virStorageSourcePtr src,
         return 0;
 
     if (virStoragePRDefIsManaged(src->pr)) {
+        VIR_FREE(src->pr->path);
         if (!(src->pr->path = qemuDomainGetManagedPRSocketPath(priv)))
             return -1;
         if (VIR_STRDUP(src->pr->mgralias, qemuDomainGetManagedPRAlias()) < 0)