iw_cxgb3: Fix incorrectly returning error on success

commit 67f1aee upstream.

The cxgb3_*_send() functions return NET_XMIT_ values, which are
positive integers values. So don't treat positive return values
as an error.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Willy Tarreau <w@1wt.eu>

drivers/infiniband/hw/cxgb3/iwch_cm.c

@@ -152,7 +152,7 @@ int iwch_l2t_send(struct t3cdev *tdev, struct sk_buff *skb, struct l2t_entry *l2
 	error = l2t_send(tdev, skb, l2e);
 	if (error < 0)
 		kfree_skb(skb);
-	return error;
+	return error < 0 ? error : 0;
 }
 
 int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb)
@@ -168,7 +168,7 @@ int iwch_cxgb3_ofld_send(struct t3cdev *tdev, struct sk_buff *skb)
 	error = cxgb3_ofld_send(tdev, skb);
 	if (error < 0)
 		kfree_skb(skb);
-	return error;
+	return error < 0 ? error : 0;
 }
 
 static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb)