drm/virtio: simplify the return expression

Simplify the return expression.
Reported-by: NZeal Robot <zealci@zte.com.cn>
Signed-off-by: NMinghao Chi <chi.minghao@zte.com.cn>
Link: http://patchwork.freedesktop.org/patch/msgid/20220429054911.3851977-1-chi.minghao@zte.com.cnSigned-off-by: NGerd Hoffmann <kraxel@redhat.com>

drivers/gpu/drm/virtio/virtgpu_prime.c

@@ -90,7 +90,6 @@ static const struct virtio_dma_buf_ops virtgpu_dmabuf_ops =  {
 int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 				    struct virtio_gpu_object *bo)
 {
-	int ret;
 	struct virtio_gpu_object_array *objs;
 
 	objs = virtio_gpu_array_alloc(1);
@@ -98,11 +97,8 @@ int virtio_gpu_resource_assign_uuid(struct virtio_gpu_device *vgdev,
 		return -ENOMEM;
 
 	virtio_gpu_array_add_obj(objs, &bo->base.base);
-	ret = virtio_gpu_cmd_resource_assign_uuid(vgdev, objs);
-	if (ret)
-		return ret;
 
-	return 0;
+	return virtio_gpu_cmd_resource_assign_uuid(vgdev, objs);
 }
 
 struct dma_buf *virtgpu_gem_prime_export(struct drm_gem_object *obj,