hns_roce_buf_free
void hns_roce_buf_free(struct hns_roce_dev *hr_dev, struct hns_roce_buf *buf);
hns_roce_buf_free(hr_dev, link_tbl->buf);
hns_roce_buf_free(hr_dev, tbl->buf);
hns_roce_buf_free(hr_dev, mtr->kmem);