drm/radeon: check kmalloc() for failures

We can just return -ENOMEM here if the allocation fails.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
1 file changed