daemonUnixSocketPaths: Unify exit paths

Right now, there is a lot of exit points from the function.
Depending on their position they need to copy the same free
calls. This goes against our style where we usually have just one
exit point from the function which also does the necessary free.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

daemon/libvirtd.c

@@ -262,50 +262,47 @@ daemonUnixSocketPaths(struct daemonConfig *config,
                       char **rosockfile,
                       char **admsockfile)
 {
+    int ret = -1;
+    char *rundir = NULL;
+
     if (config->unix_sock_dir) {
         if (virAsprintf(sockfile, "%s/libvirt-sock", config->unix_sock_dir) < 0)
-            goto error;
+            goto cleanup;
 
         if (privileged) {
-            if (virAsprintf(rosockfile, "%s/libvirt-sock-ro", config->unix_sock_dir) < 0)
-                goto error;
-            if (virAsprintf(admsockfile, "%s/libvirt-admin-sock", config->unix_sock_dir) < 0)
-                goto error;
+            if (virAsprintf(rosockfile, "%s/libvirt-sock-ro", config->unix_sock_dir) < 0 ||
+                virAsprintf(admsockfile, "%s/libvirt-admin-sock", config->unix_sock_dir) < 0)
+                goto cleanup;
         }
     } else {
         if (privileged) {
             if (VIR_STRDUP(*sockfile, LOCALSTATEDIR "/run/libvirt/libvirt-sock") < 0 ||
                 VIR_STRDUP(*rosockfile, LOCALSTATEDIR "/run/libvirt/libvirt-sock-ro") < 0 ||
                 VIR_STRDUP(*admsockfile, LOCALSTATEDIR "/run/libvirt/libvirt-admin-sock") < 0)
-                goto error;
+                goto cleanup;
         } else {
-            char *rundir = NULL;
             mode_t old_umask;
 
             if (!(rundir = virGetUserRuntimeDirectory()))
-                goto error;
+                goto cleanup;
 
             old_umask = umask(077);
             if (virFileMakePath(rundir) < 0) {
                 umask(old_umask);
-                VIR_FREE(rundir);
-                goto error;
+                goto cleanup;
             }
             umask(old_umask);
 
             if (virAsprintf(sockfile, "%s/libvirt-sock", rundir) < 0 ||
-                virAsprintf(admsockfile, "%s/libvirt-admin-sock", rundir) < 0) {
-                VIR_FREE(rundir);
-                goto error;
-            }
-
-            VIR_FREE(rundir);
+                virAsprintf(admsockfile, "%s/libvirt-admin-sock", rundir) < 0)
+                goto cleanup;
         }
     }
-    return 0;
 
- error:
-    return -1;
+    ret = 0;
+ cleanup:
+    VIR_FREE(rundir);
+    return ret;
 }