net/mlx5: fix counter in non-termination meter

net/mlx5: fix counter in non-termination meter

In rte_flow, if a counter action is before a meter which has
non-termination policy, the counter value only includes packets not
being dropped.

This patch fixes this issue by differentiating the order of counter and
non-termination meter:
1. counter + meter, counts all packets hitting this flow.
2. meter + counter, only counts packets not being dropped.

Fixes: 51ec04dc7bcf ("net/mlx5: connect meter policy to created flows")
Cc: stable@dpdk.org
Signed-off-by: Shun Hao <shunh@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>