net/mlx5: fs, fix RDMA TRANSPORT init cleanup flow

Failing during the initialization of root_namespace didn't cleanup
the priorities of the namespace on which the failure occurred.

Properly cleanup said priorities on failure.

Fixes: 52931f5 ("net/mlx5: fs, add multiple prios to RDMA TRANSPORT steering domain")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Link: https://patch.msgid.link/78cf89b5d8452caf1e979350b30ada6904362f66.1751451780.git.leon@kernel.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: PatrisiousHaddad

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

@@ -3247,6 +3247,7 @@ init_rdma_transport_rx_root_ns_one(struct mlx5_flow_steering *steering,
 {
 	struct mlx5_flow_root_namespace *root_ns;
 	struct fs_prio *prio;
+	int ret;
 	int i;
 
 	steering->rdma_transport_rx_root_ns[vport_idx] =
@@ -3258,11 +3259,17 @@ init_rdma_transport_rx_root_ns_one(struct mlx5_flow_steering *steering,
 
 	for (i = 0; i < MLX5_RDMA_TRANSPORT_BYPASS_PRIO; i++) {
 		prio = fs_create_prio(&root_ns->ns, i, 1);
-		if (IS_ERR(prio))
-			return PTR_ERR(prio);
+		if (IS_ERR(prio)) {
+			ret = PTR_ERR(prio);
+			goto err;
+		}
 	}
 	set_prio_attrs(root_ns);
 	return 0;
+
+err:
+	cleanup_root_ns(root_ns);
+	return ret;
 }
 
 static int
@@ -3271,6 +3278,7 @@ init_rdma_transport_tx_root_ns_one(struct mlx5_flow_steering *steering,
 {
 	struct mlx5_flow_root_namespace *root_ns;
 	struct fs_prio *prio;
+	int ret;
 	int i;
 
 	steering->rdma_transport_tx_root_ns[vport_idx] =
@@ -3282,11 +3290,17 @@ init_rdma_transport_tx_root_ns_one(struct mlx5_flow_steering *steering,
 
 	for (i = 0; i < MLX5_RDMA_TRANSPORT_BYPASS_PRIO; i++) {
 		prio = fs_create_prio(&root_ns->ns, i, 1);
-		if (IS_ERR(prio))
-			return PTR_ERR(prio);
+		if (IS_ERR(prio)) {
+			ret = PTR_ERR(prio);
+			goto err;
+		}
 	}
 	set_prio_attrs(root_ns);
 	return 0;
+
+err:
+	cleanup_root_ns(root_ns);
+	return ret;
 }
 
 static int init_rdma_transport_rx_root_ns(struct mlx5_flow_steering *steering)