openvswitch: Fix return value check in ovs_meter_cmd_features()

In case of error, the function ovs_meter_cmd_reply_start() returns
ERR_PTR() not NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: 96fbc13d7e77 ("openvswitch: Add meter infrastructure")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index 2a5ba35..2e58b6c 100644 (file)
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -166,7 +166,7 @@ static int ovs_meter_cmd_features(struct sk_buff *skb, struct genl_info *info)
 
        reply = ovs_meter_cmd_reply_start(info, OVS_METER_CMD_FEATURES,
                                          &ovs_reply_header);
-       if (!reply)
+       if (IS_ERR(reply))
                return PTR_ERR(reply);
 
        if (nla_put_u32(reply, OVS_METER_ATTR_MAX_METERS, U32_MAX) ||