[PATCH] openvswitch: fix odd_ptr_err.cocci warnings

[kbuild test robot]

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 <pshelar@xxxxxxxxxx>
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---

 vport-gre.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -186,7 +186,7 @@ static int gre_tnl_send(struct vport *vp
 	/* 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;
 	}
--
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