mlx5_fs_pool_acquire_index
err = mlx5_fs_pool_acquire_index(fc_pool, &pool_index);
int mlx5_fs_pool_acquire_index(struct mlx5_fs_pool *fs_pool,
err = mlx5_fs_pool_acquire_index(pr_pool, &pool_index);
err = mlx5_fs_pool_acquire_index(mh_pool, &pool_index);