qxl: catch qxlfb_create_pinned_object failures

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1463072816-11788-1-git-send-email-kraxel@redhat.com

drivers/gpu/drm/qxl/qxl_fb.c

@@ -251,6 +251,9 @@ static int qxlfb_create(struct qxl_fbdev *qfbdev,
 	mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
 
 	ret = qxlfb_create_pinned_object(qfbdev, &mode_cmd, &gobj);
+	if (ret < 0)
+		return ret;
+
 	qbo = gem_to_qxl_bo(gobj);
 	QXL_INFO(qdev, "%s: %dx%d %d\n", __func__, mode_cmd.width,
 		 mode_cmd.height, mode_cmd.pitches[0]);