drm/amdgpu: fix an error code in init_pmu_entry_by_type_and_add()

If the kmemdup() fails then this should return a negative error code
but it currently returns success

Fixes: b4a7db71ea06 ("drm/amdgpu: add per device user friendly xgmi events for vega20")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
index 19c0a36..82e9ecf 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pmu.c
@@ -519,8 +519,10 @@ static int init_pmu_entry_by_type_and_add(struct amdgpu_pmu_entry *pmu_entry,
        pmu_entry->pmu.attr_groups = kmemdup(attr_groups, sizeof(attr_groups),
                                                                GFP_KERNEL);
 
-       if (!pmu_entry->pmu.attr_groups)
+       if (!pmu_entry->pmu.attr_groups) {
+               ret = -ENOMEM;
                goto err_attr_group;
+       }
 
        snprintf(pmu_name, PMU_NAME_SIZE, "%s_%d", pmu_entry->pmu_file_prefix,
                                adev_to_drm(pmu_entry->adev)->primary->index);