[PATCH 5.3 243/344] IB/mlx5: Free mpi in mp_slave mode

[Greg Kroah-Hartman]

From: Danit Goldberg <dan...@mellanox.com>

commit 5d44adebbb7e785939df3db36ac360f5e8b73e44 upstream.

ib_add_slave_port() allocates a multiport struct but never frees it.
Don't leak memory, free the allocated mpi struct during driver unload.

Cc: <sta...@vger.kernel.org>
Fixes: 32f69e4be269 ("{net, IB}/mlx5: Manage port association for multiport 
RoCE")
Link: https://lore.kernel.org/r/20190916064818.19823-3-l...@kernel.org
Signed-off-by: Danit Goldberg <dan...@mellanox.com>
Reviewed-by: Jason Gunthorpe <j...@mellanox.com>
Signed-off-by: Jason Gunthorpe <j...@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/infiniband/hw/mlx5/main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -6959,6 +6959,7 @@ static void mlx5_ib_remove(struct mlx5_c
                        mlx5_ib_unbind_slave_port(mpi->ibdev, mpi);
                list_del(&mpi->list);
                mutex_unlock(&mlx5_ib_multiport_mutex);
+               kfree(mpi);
                return;
        }