else branch is pointless if it's right at the end of function and use
unlikely() on err path.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NNikola Pajkovsky <npajkovsky@suse.cz>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>