greybus: camera: fix memory leak in configure-streams error path

Fix memory leak in configure-streams error path by making sure to
release the operation buffers before returning.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

drivers/staging/greybus/camera.c

@@ -115,7 +115,7 @@ static int gb_camera_configure_streams(struct gb_camera *gcam,
 				GB_CAMERA_TYPE_CONFIGURE_STREAMS,
 				req, req_size, resp, resp_size);
 	if (ret < 0)
-		return ret;
+		goto done;
 
 	if (le16_to_cpu(resp->num_streams) > nstreams) {
 		gcam_dbg(gcam, "got #streams %u > request %u\n",