drm/virtio: fix error check

The >= compare op must happen in cpu byte order, doing it in
little endian fails on big endian machines like s390.
Reported-by: Sebastian Mitterle <smitterl@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200214080100.1273-1-kraxel@redhat.com

drivers/gpu/drm/virtio/virtgpu_vq.c

@@ -222,7 +222,7 @@ void virtio_gpu_dequeue_ctrl_func(struct work_struct *work)
 		trace_virtio_gpu_cmd_response(vgdev->ctrlq.vq, resp);
 
 		if (resp->type != cpu_to_le32(VIRTIO_GPU_RESP_OK_NODATA)) {
-			if (resp->type >= cpu_to_le32(VIRTIO_GPU_RESP_ERR_UNSPEC)) {
+			if (le32_to_cpu(resp->type) >= VIRTIO_GPU_RESP_ERR_UNSPEC) {
 				struct virtio_gpu_ctrl_hdr *cmd;
 				cmd = virtio_gpu_vbuf_ctrl_hdr(entry);
 				DRM_ERROR_RATELIMITED("response 0x%x (command 0x%x)\n",