The avtab_init() and cond_policydb_init() functions always return
zero so mark them as returning void and update the callers not to
check for a return value.
Suggested-by: NStephen Smalley <stephen.smalley.work@gmail.com>
Reviewed-by: NOndrej Mosnacek <omosnace@redhat.com>
Signed-off-by: NPaul Moore <paul@paul-moore.com>