drm/virtio: free virtqueues on probe failure

We should call virtio_gpu_deinit() to free virtqueues when
drm_dev_register() failed.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210517084913.403-3-xieyongji@bytedance.comSigned-off-by: Gerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/virtio/virtgpu_drv.c

@@ -125,11 +125,13 @@ static int virtio_gpu_probe(struct virtio_device *vdev)
 
 	ret = drm_dev_register(dev, 0);
 	if (ret)
-		goto err_free;
+		goto err_deinit;
 
 	drm_fbdev_generic_setup(vdev->priv, 32);
 	return 0;
 
+err_deinit:
+	virtio_gpu_deinit(dev);
 err_free:
 	drm_dev_put(dev);
 	return ret;