Add NULL check for mlx5_get_flow_namespace() returns in
mlx5e_tc_nic_create_miss_table() to prevent NULL pointer dereference.

Fixes: 66cb64e292d2 ("net/mlx5e: TC NIC mode, fix tc chains miss table")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 9ba99609999f..538c33c353ad 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -5216,6 +5216,8 @@ static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv)
 	ft_attr.level = MLX5E_TC_MISS_LEVEL;
 	ft_attr.prio = 0;
 	ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_KERNEL);
+	if (!ns)
+		return -EOPNOTSUPP;
 
 	*ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
 	if (IS_ERR(*ft)) {
-- 
2.34.1