openvswitch: fix odd_ptr_err.cocci warnings

Author: Wu Fengguang <fengguang.wu@intel.com>

net/openvswitch/vport-gre.c:188:5-11: inconsistent IS_ERR and PTR_ERR, PTR_ERR on line 189

 PTR_ERR should access the value just tested by IS_ERR

Semantic patch information:
 There can be false positives in the patch case, where it is the call
 IS_ERR that is wrong.

Generated by: scripts/coccinelle/tests/odd_ptr_err.cocci

CC: Pravin B Shelar 
Signed-off-by: Fengguang Wu 
Acked-by: Pravin B Shelar 
Signed-off-by: David S. Miller

---
 net/openvswitch/vport-gre.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
 
diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
index 28f54e9..d4168c4 100644
--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -186,7 +186,7 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
 	/* Push Tunnel header. */
 	skb = __build_header(skb, tunnel_hlen);
 	if (IS_ERR(skb)) {
-		err = PTR_ERR(rt);
+		err = PTR_ERR(skb);
 		skb = NULL;
 		goto err_free_rt;
 	}

openvswitch: fix odd_ptr_err.cocci warnings

qlambert

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