drm/amdgpu/mes: Add NULL check for mes_hung_db_array allocation

kcalloc but does not check for failure. If the allocation fails, the
pointer remains NULL but the function returns success. Subsequent code
using this buffer will dereference a NULL pointer, causing a kernel
oops. Add a check to return -ENOMEM if the allocation fails.

Signed-off-by: Geoffrey McRae <geoffrey.mcrae@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

0 files changed, 0 insertions, 0 deletions