[PATCH] drm/panel: add missing platform_driver_unregister() on error path

[Yang Yingliang]

If mipi_dsi_driver_register() failed, platform_driver_unregister()
need be called.

Fixes: 210fcd9d9cf1 ("drm/panel: Add support for Panasonic VVX10F004B0")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
---
 drivers/gpu/drm/panel/panel-simple.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c 
b/drivers/gpu/drm/panel/panel-simple.c
index 2be358fb46f7..2966ac13c538 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -4644,8 +4644,10 @@ static int __init panel_simple_init(void)
 
        if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
                err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
-               if (err < 0)
+               if (err < 0) {
+                       
platform_driver_unregister(&panel_simple_platform_driver);
                        return err;
+               }
        }
 
        return 0;
-- 
2.25.1