s390/sclp: Simplify control flow in sclp_realize() Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <1450452927-8346-24-git-send-email-armbru@redhat.com>