gpu: nvgpu: cde: set err properly in oom condition

When gk20a_gmmu_map runs out of memory, set the error code before
returning early, so that caller knows about that cde load didn't succeed
and wouldn't use the bad context.

Change-Id: I1e166c78e39f07df941a29fc4e392a853d97a5c6
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: http://git-master/r/557273
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/cde_gk20a.c b/drivers/gpu/nvgpu/gk20a/cde_gk20a.c
index b7264206..e6dbaea8 100644
--- a/drivers/gpu/nvgpu/gk20a/cde_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/cde_gk20a.c
@@ -770,6 +770,7 @@ int gk20a_cde_load(struct gk20a_cde_ctx *cde_ctx)
 
         if (!vaddr) {
                 gk20a_warn(&cde_ctx->pdev->dev, "cde: cannot map compression bit backing store");
+                err = ENOMEM;
                 goto err_map_backingstore;
         }