[PATCH 4.14 070/115] RDS: IB: fix passing zero to ERR_PTR() warning

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: YueHaibing <yuehaib...@huawei.com>

[ Upstream commit 5941923da29e84bc9e2a1abb2c14fffaf8d71e2f ]

Fix a static code checker warning:
 net/rds/ib_frmr.c:82 rds_ib_alloc_frmr() warn: passing zero to 'ERR_PTR'

The error path for ib_alloc_mr failure should set err to PTR_ERR.

Fixes: 1659185fb4d0 ("RDS: IB: Support Fastreg MR (FRMR) memory registration 
mode")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
Acked-by: Santosh Shilimkar <santosh.shilim...@oracle.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 net/rds/ib_frmr.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/rds/ib_frmr.c
+++ b/net/rds/ib_frmr.c
@@ -61,6 +61,7 @@ static struct rds_ib_mr *rds_ib_alloc_fr
                         pool->fmr_attr.max_pages);
        if (IS_ERR(frmr->mr)) {
                pr_warn("RDS/IB: %s failed to allocate MR", __func__);
+               err = PTR_ERR(frmr->mr);
                goto out_no_cigar;
        }