qemu: Restore machinename even without cgroups

The virresctrl will use this as well and we need to have that info after restart
to properly clean up /sys/fs/resctrl.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

src/qemu/qemu_cgroup.c

@@ -986,10 +986,6 @@ qemuConnectCgroup(virDomainObjPtr vm)
     if (!virCgroupAvailable())
         goto done;
 
-    priv->machineName = qemuDomainGetMachineName(vm);
-    if (!priv->machineName)
-            goto cleanup;
-
     virCgroupFree(&priv->cgroup);
 
     if (virCgroupNewDetectMachine(vm->def->name,

src/qemu/qemu_process.c

@@ -7198,6 +7198,10 @@ qemuProcessReconnect(void *opaque)
     if (qemuHostdevUpdateActiveDomainDevices(driver, obj->def) < 0)
         goto error;
 
+    priv->machineName = qemuDomainGetMachineName(obj);
+    if (!priv->machineName)
+        goto error;
+
     if (qemuConnectCgroup(obj) < 0)
         goto error;