[PATCH 5.15.y] ipvs: properly dereference pe in ip_vs_add_service

[Cliff Liu <donghua.liu@xxxxxxxxxxxxx>]

From: Chen Hanxiao <chenhx.fnst@xxxxxxxxxxx>

[ Upstream commit cbd070a4ae62f119058973f6d2c984e325bce6e7 ]

Use pe directly to resolve sparse warning:

  net/netfilter/ipvs/ip_vs_ctl.c:1471:27: warning: dereference of noderef 
expression

Fixes: 39b972231536 ("ipvs: handle connections started by real-servers")
Signed-off-by: Chen Hanxiao <chenhx.fnst@xxxxxxxxxxx>
Acked-by: Julian Anastasov <ja@xxxxxx>
Acked-by: Simon Horman <horms@xxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Cliff Liu <donghua.liu@xxxxxxxxxxxxx>
Signed-off-by: He Zhe <Zhe.He@xxxxxxxxxxxxx>
---
Verified the build test.
---
 net/netfilter/ipvs/ip_vs_ctl.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index d0b64c36471d..0f1531e0ce4e 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -1384,20 +1384,20 @@ ip_vs_add_service(struct netns_ipvs *ipvs, struct 
ip_vs_service_user_kern *u,
                sched = NULL;
        }
 
-       /* Bind the ct retriever */
-       RCU_INIT_POINTER(svc->pe, pe);
-       pe = NULL;
-
        /* Update the virtual service counters */
        if (svc->port == FTPPORT)
                atomic_inc(&ipvs->ftpsvc_counter);
        else if (svc->port == 0)
                atomic_inc(&ipvs->nullsvc_counter);
-       if (svc->pe && svc->pe->conn_out)
+       if (pe && pe->conn_out)
                atomic_inc(&ipvs->conn_out_counter);
 
        ip_vs_start_estimator(ipvs, &svc->stats);
 
+       /* Bind the ct retriever */
+       RCU_INIT_POINTER(svc->pe, pe);
+       pe = NULL;
+
        /* Count only IPv4 services for old get/setsockopt interface */
        if (svc->af == AF_INET)
                ipvs->num_services++;
-- 
2.43.0