gpu: nvgpu: Submit coverity fixes

Clear ioctl buffer and fix double free, and error case memory leak.

Bug 200059216

Change-Id: I21cc2b0f6a7e8fca09f72caf4c54d570b13f400b
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/655347

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/acr_gm20b.c b/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
index 7c6b734b..2fb3bf9d 100644
--- a/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
@@ -163,7 +163,6 @@ int fecs_ucode_details(struct gk20a *g, struct flcn_ucode_img *p_img)
 
         p_img->desc = kzalloc(sizeof(struct pmu_ucode_desc), GFP_KERNEL);
         if (p_img->desc == NULL) {
-                kfree(lsf_desc);
                 err = -ENOMEM;
                 goto free_lsf_desc;
         }