net/mlx5: fix jump table leak

net/mlx5: fix jump table leak

Currently, when translate jump action, the table reference will be
increased all the time. But when release the jump action, the table
resource reference will only be decreased when jump action is released.
It means for jump action which was referenced more than one time, the
increased table reference only decrease one time when jump action is
released.

Add table release when the jump action was not new created.

Fixes: 684b9a1b1f5c ("net/mlx5: support jump action")
Cc: stable@dpdk.org
Signed-off-by: Suanming Mou <suanmingm@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>