Add missing check for success after call to mlx4_ib_send_to_wire() in
mlx4_ib_multiplex_mad().
Amended the existing pr_debug() in mlx4_ib_multiplex_cm_handler() and
mlx4_ib_demux_cm_handler() with attr_id during a lookup failure.
Removed two noisy pr_debug() in mad.c
Fixes: 3cf69cc8db ("IB/mlx4: Add CM paravirtualization")
Link: https://lore.kernel.org/r/20200803061941.1139994-2-haakon.bugge@oracle.com
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
094619449a