RDMA/hns: Remove redundant 'bt_level' for hem_list_alloc_item()

The 'bt_level' parameter is not used in hem_list_alloc_item(),
so remove it.

Link: https://lore.kernel.org/r/20220922123315.3732205-6-xuhaoyue1@hisilicon.comSigned-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/hns/hns_roce_hem.c

@@ -986,7 +986,7 @@ struct hns_roce_hem_head {
 
 static struct hns_roce_hem_item *
 hem_list_alloc_item(struct hns_roce_dev *hr_dev, int start, int end, int count,
-		    bool exist_bt, int bt_level)
+		    bool exist_bt)
 {
 	struct hns_roce_hem_item *hem;
 
@@ -1195,7 +1195,7 @@ static int hem_list_alloc_mid_bt(struct hns_roce_dev *hr_dev,
 		start_aligned = (distance / step) * step + r->offset;
 		end = min_t(int, start_aligned + step - 1, max_ofs);
 		cur = hem_list_alloc_item(hr_dev, start_aligned, end, unit,
-					  true, level);
+					  true);
 		if (!cur) {
 			ret = -ENOMEM;
 			goto err_exit;
@@ -1247,7 +1247,7 @@ alloc_root_hem(struct hns_roce_dev *hr_dev, int unit, int *max_ba_num,
 	/* indicate to last region */
 	r = &regions[region_cnt - 1];
 	hem = hem_list_alloc_item(hr_dev, offset, r->offset + r->count - 1,
-				  ba_num, true, 0);
+				  ba_num, true);
 	if (!hem)
 		return ERR_PTR(-ENOMEM);
 
@@ -1264,7 +1264,7 @@ static int alloc_fake_root_bt(struct hns_roce_dev *hr_dev, void *cpu_base,
 	struct hns_roce_hem_item *hem;
 
 	hem = hem_list_alloc_item(hr_dev, r->offset, r->offset + r->count - 1,
-				  r->count, false, 0);
+				  r->count, false);
 	if (!hem)
 		return -ENOMEM;