IB/mlx5: Fix RoCE Address Path fields

When working over a RoCE network, the UDP source port should be set only
for statically connected QPs (RC, UC and XRC).

Fixes: 2811ba51 ("IB/mlx5: Add RoCE fields to Address Vector")
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>