CVE-2025-21975 net/mlx5: handle errors in mlx5_chains_create_table()

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: handle errors in mlx5chainscreatetable In mlx5chainscreatetable, the return value of mlx5getfdbsubns and mlx5getflownamespace must be checked to prevent NULL pointer dereferences. If either function fails, the function...