net/mlx4: fix leak when configured repeatedly
net/mlx4: fix leak when configured repeatedly

Currently, configuring a mlx device, it will allocate its
own process private in mlx5_proc_priv_init() and only frees
it when closing the device. This will lead to a memory leak,
when a device is configured repeatedly.

For example:
for(...)
do
    rte_eth_dev_configure
    rte_eth_rx_queue_setup
    rte_eth_tx_queue_setup
    rte_eth_dev_start
    rte_eth_dev_stop
done

Fixes: 97d37d2c1f6b ("net/mlx4: remove device register remap")
Cc: stable@dpdk.org

Signed-off-by: Yunjian Wang <9985a735d5d5f80ef648228b285228d6eb6eaf45@huawei.com>
Acked-by: Viacheslav Ovsiienko <5b8db9bb93a9a9aefc8828f79604d1fe963a53dd@nvidia.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk