Otherwise we are setting err twice, what is wrong and causes an abort.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20190403114958.3705-2-quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>