virtio: Remove unneeded g_free() check in virtio_cleanup()

Signed-off-by: NLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

hw/virtio.c

@@ -845,8 +845,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f)
 void virtio_cleanup(VirtIODevice *vdev)
 {
     qemu_del_vm_change_state_handler(vdev->vmstate);
-    if (vdev->config)
-        g_free(vdev->config);
+    g_free(vdev->config);
     g_free(vdev->vq);
     g_free(vdev);
 }