gpu: nvgpu: fix struct file memleak in alloc_as

Free also newly allocated struct file in error conditions with fput, and
pair it by not trying to release the resulting null as_share on release.

Bug 1597056

Change-Id: Ifad5c3a829b2c459ed6a738ecdc1ac2ac7e1678a
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/671527
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/as_gk20a.c b/drivers/gpu/nvgpu/gk20a/as_gk20a.c
index cd5cdd48..fa131bb1 100644
--- a/drivers/gpu/nvgpu/gk20a/as_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/as_gk20a.c
@@ -247,6 +247,9 @@ int gk20a_as_dev_release(struct inode *inode, struct file *filp)
 
         gk20a_dbg_fn("");
 
+        if (!as_share)
+                return 0;
+
         return gk20a_as_release_share(as_share);
 }