[PATCH 09/12] drm/syncobj: fix resource leak in drm_syncobj_import_sync_file_fence

[Julian Orth <ju.orth@gmail.com>]

Previously, if dma_fence_chain_alloc() failed, the syncobj and fence
would be leaked.

Signed-off-by: Julian Orth <ju.orth@gmail.com>
---
 drivers/gpu/drm/drm_syncobj.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 9b7ecc2978f5..1da96e23dfc0 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -767,30 +767,35 @@ static int drm_syncobj_import_sync_file_fence(struct drm_file *file_private,
 {
 	struct dma_fence *fence = sync_file_get_fence(fd);
 	struct drm_syncobj *syncobj;
+	int ret = 0;
 
 	if (!fence)
 		return -EINVAL;
 
 	syncobj = drm_syncobj_find(file_private, handle);
 	if (!syncobj) {
-		dma_fence_put(fence);
-		return -ENOENT;
+		ret = -ENOENT;
+		goto err_syncobj;
 	}
 
 	if (point) {
 		struct dma_fence_chain *chain = dma_fence_chain_alloc();
 
-		if (!chain)
-			return -ENOMEM;
+		if (!chain) {
+			ret = -ENOMEM;
+			goto err;
+		}
 
 		drm_syncobj_add_point(syncobj, chain, fence, point);
 	} else {
 		drm_syncobj_replace_fence(syncobj, fence);
 	}
 
-	dma_fence_put(fence);
+err:
 	drm_syncobj_put(syncobj);
-	return 0;
+err_syncobj:
+	dma_fence_put(fence);
+	return ret;
 }
 
 static int drm_syncobj_export_sync_file(struct drm_file *file_private,

-- 
2.54.0