[PATCH] drm/amd/display: Fix memory leak in dm_set_writeback()

[Harshit Mogalapalli]

'wb_info' needs to be freed on error paths or it would leak the memory.

Smatch pointed this out.

Fixes: c81e13b929df ("drm/amd/display: Hande writeback request from userspace")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapa...@oracle.com>
---
This is based on static analysis and only compile tested
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index afdcc43ea06c..333995f70239 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -8871,12 +8871,14 @@ static void dm_set_writeback(struct 
amdgpu_display_manager *dm,
        acrtc = to_amdgpu_crtc(wb_conn->encoder.crtc);
        if (!acrtc) {
                DRM_ERROR("no amdgpu_crtc found\n");
+               kfree(wb_info);
                return;
        }
 
        afb = to_amdgpu_framebuffer(new_con_state->writeback_job->fb);
        if (!afb) {
                DRM_ERROR("No amdgpu_framebuffer found\n");
+               kfree(wb_info);
                return;
        }
 
-- 
2.39.3