gpu: nvgpu: fix Coverity issues

- operands not affecting result (id = 12845)
- logically dead code (id = 12890)
- dereference after null check (id = 12968)
- unsigned compared to 0 (id = 13176)
- resource leak (id = 13338, 18673)
- unused pointer value (id = 13916)

Bug 1703084

Change-Id: I2f401dd93126af27748c53fa1b3a59cb154af36b
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/835143
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
index 4c31d5e4..4bc8d385 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.c
@@ -1735,7 +1735,7 @@ int gk20a_vm_get_compbits_info(struct vm_gk20a *vm,
 
         mapped_buffer = find_mapped_buffer_locked(&vm->mapped_buffers, mapping_gva);
 
-        if (!mapped_buffer | !mapped_buffer->user_mapped)
+        if (!mapped_buffer || !mapped_buffer->user_mapped)
         {
                 mutex_unlock(&vm->update_gmmu_lock);
                 gk20a_err(d, "%s: bad offset 0x%llx", __func__, mapping_gva);