net/mlx5: group fdb cleanup to single function

Currently, the allocation of fdb software objects are done is single
function, oppose to the cleanup of them.
Group the cleanup of fdb software objects to single function.
Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/fs_core.c

@@ -2866,6 +2866,14 @@ static int create_fdb_bypass(struct mlx5_flow_steering *steering)
 	return 0;
 }
 
+static void cleanup_fdb_root_ns(struct mlx5_flow_steering *steering)
+{
+	cleanup_root_ns(steering->fdb_root_ns);
+	steering->fdb_root_ns = NULL;
+	kfree(steering->fdb_sub_ns);
+	steering->fdb_sub_ns = NULL;
+}
+
 static int init_fdb_root_ns(struct mlx5_flow_steering *steering)
 {
 	struct fs_prio *maj_prio;
@@ -2916,10 +2924,7 @@ static int init_fdb_root_ns(struct mlx5_flow_steering *steering)
 	return 0;
 
 out_err:
-	cleanup_root_ns(steering->fdb_root_ns);
-	kfree(steering->fdb_sub_ns);
-	steering->fdb_sub_ns = NULL;
-	steering->fdb_root_ns = NULL;
+	cleanup_fdb_root_ns(steering);
 	return err;
 }
 
@@ -3079,10 +3084,7 @@ void mlx5_fs_core_cleanup(struct mlx5_core_dev *dev)
 	struct mlx5_flow_steering *steering = dev->priv.steering;
 
 	cleanup_root_ns(steering->root_ns);
-	cleanup_root_ns(steering->fdb_root_ns);
-	steering->fdb_root_ns = NULL;
-	kfree(steering->fdb_sub_ns);
-	steering->fdb_sub_ns = NULL;
+	cleanup_fdb_root_ns(steering);
 	cleanup_root_ns(steering->port_sel_root_ns);
 	cleanup_root_ns(steering->sniffer_rx_root_ns);
 	cleanup_root_ns(steering->sniffer_tx_root_ns);