RDMA/hns: ensure for-loop actually iterates and free's buffers

The current for-loop zeros variable i and only loops once, hence
not all the buffers are free'd.  Fix this by setting i correctly.

Detected by CoverityScan, CID#1463415 ("Operands don't affect result")

Fixes: a5073d6054f7 ("RDMA/hns: Add eq support of hip08")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index db2ff35..ec63877 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4383,7 +4383,7 @@ err_dma_alloc_buf:
        eq->l0_dma = 0;
 
        if (mhop_num == 1)
-               for (i -= i; i >= 0; i--)
+               for (i -= 1; i >= 0; i--)
                        dma_free_coherent(dev, buf_chk_sz, eq->buf[i],
                                          eq->buf_dma[i]);
        else if (mhop_num == 2) {