net/mlx5: fix indirect RSS creation when port is stopped

net/mlx5: fix indirect RSS creation when port is stopped

mlx5_ind_table_obj_setup() was incrementing RxQ reference counters
even when the port was stopped, which prevented RxQ release
and triggered an internal assertion.
Only increment reference counter when the port is started.

Fixes: ec4e11d41d12 ("net/mlx5: preserve indirect actions on restart")
Cc: stable@dpdk.org
Signed-off-by: Dmitry Kozlyuk <dkozlyuk@nvidia.com>
Reviewed-by: Matan Azrad <matan@nvidia.com>