diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 3003547dcabe..ce9fe20d6106 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -2452,6 +2452,8 @@ proc_do_sync_threshold(const struct ctl_table *table, int write,
 	mutex_lock(&ipvs->sync_mutex);
 	memcpy(val, valp, sizeof(val));
 	rc = proc_dointvec(&tmp, write, buffer, lenp, ppos);
+	if (rc)
+		goto out;
 	if (write) {
 		if (val[0] < 0 || val[1] < 0 ||
 		    (val[0] >= val[1] && val[1]))
@@ -2459,6 +2461,7 @@ proc_do_sync_threshold(const struct ctl_table *table, int write,
 		else
 			memcpy(valp, val, sizeof(val));
 	}
+out:
 	mutex_unlock(&ipvs->sync_mutex);
 	return rc;
 }