connection cleanup if connection creation failed

Change-Id: Ib736c6748aaf6abe8b28e01909142448d4557c88
Signed-off-by: Eyal Salomon <esalomon@mellanox.com>
[xio_mt_client] test if client connection failed

Change-Id: Ib0f5f448b16bcf0d774d8aa2494a4e75ef99b199
Signed-off-by: Eyal Salomon <esalomon@mellanox.com>