[PATCH] drm: msm: fix possible memory leak in mdp5_crtc_cursor_set()

[Hangyu Hua]

drm_gem_object_lookup will call drm_gem_object_get inside. So cursor_bo
needs to be put when msm_gem_get_and_pin_iova fails.

Fixes: e172d10a9c4a ("drm/msm/mdp5: Add hardware cursor support")
Signed-off-by: Hangyu Hua <hbh...@gmail.com>
---
 drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c 
b/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c
index b966cd69f99d..6a5f73f6a23b 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c
@@ -991,8 +991,10 @@ static int mdp5_crtc_cursor_set(struct drm_crtc *crtc,
 
        ret = msm_gem_get_and_pin_iova(cursor_bo, kms->aspace,
                        &mdp5_crtc->cursor.iova);
-       if (ret)
+       if (ret) {
+               drm_gem_object_put(cursor_bo);
                return -EINVAL;
+       }
 
        pm_runtime_get_sync(&pdev->dev);
 
-- 
2.25.1