[PATCH -next] soc: mediatek: Missing platform_device_unregister() on error in mtk_mmsys_probe()

[Wei Yongjun <weiyongjun1@xxxxxxxxxx>]

Add the missing platform_device_unregister() before return
from mtk_mmsys_probe() in the error handling case.

Fixes: 667c769246b0 ("soc / drm: mediatek: Fix mediatek-drm device probing")
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/soc/mediatek/mtk-mmsys.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 05e322c9c301..05ce4cb464b0 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -312,8 +312,10 @@ static int mtk_mmsys_probe(struct platform_device *pdev)
 
 	drm = platform_device_register_data(&pdev->dev, "mediatek-drm",
 					    PLATFORM_DEVID_AUTO, NULL, 0);
-	if (IS_ERR(drm))
+	if (IS_ERR(drm)) {
+		platform_device_unregister(clks);
 		return PTR_ERR(drm);
+	}
 
 	return 0;
 }