CVE-2023-53546 net/mlx5: DR, fix memory leak in mlx5dr_cmd_create_reformat_ctx

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: DR, fix memory leak in mlx5drcmdcreatereformatctx when mlx5cmdexec failed in mlx5drcmdcreatereformatctx, the memory pointed by 'in' is not released, which will cause memory leak. Move memory release after mlx5cmdexec...