[dpdk-stable] [PATCH] net/mlx5: fix Tx queue completions on stop

[Matan Azrad]

From: Viacheslav Ovsiienko
> The Tx queue completion production index was not reset on Tx queue stop and
> there were completions remaining from the previous queue run. This caused
> the wrong completion queue operating and overall Tx queue malfunction on
> queue restart.
> 
> Fixes: 161d103b231c ("net/mlx5: add queue start and stop")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>
Acked-by: Matan Azrad <matan at nvidia.com>