appletalk: fix erroneous return value

The atalk_sendmsg() function might return wrong value ENETUNREACH
instead of -ENETUNREACH.

Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index d5871ac..f066781 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -1625,7 +1625,7 @@
 
 		rt = atrtr_find(&at_hint);
 	}
-	err = ENETUNREACH;
+	err = -ENETUNREACH;
 	if (!rt)
 		goto out;