From: Roi Dayan <roid@mellanox.com>
Date: Thu, 14 May 2020 23:44:38 +0300
Subject: net/mlx5: Annotate mutex destroy for root ns
Patch-mainline: v5.7-rc7
Git-commit: 9ca415399dae133b00273a4283ef31d003a6818d
References: jsc#SLE-15172

Invoke mutex_destroy() to catch any errors.

Fixes: 2cc43b494a6c ("net/mlx5_core: Managing root flow table")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -2350,6 +2350,12 @@ static int init_root_tree(struct mlx5_fl
 
 static void del_sw_root_ns(struct fs_node *node)
 {
+	struct mlx5_flow_root_namespace *root_ns;
+	struct mlx5_flow_namespace *ns;
+
+	fs_get_obj(ns, node);
+	root_ns = container_of(ns, struct mlx5_flow_root_namespace, ns);
+	mutex_destroy(&root_ns->chain_lock);
 	kfree(node);
 }