[NETLINK]: Directly return -EINTR from netlink_dump_start()

Now that all users of netlink_dump_start() use netlink_run_queue()
to process the receive queue, it is possible to return -EINTR from
netlink_dump_start() directly, therefore simplying the callers.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 1b897bc..fac2e7a 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -323,11 +323,8 @@
 		if (ops->dumpit == NULL)
 			return -EOPNOTSUPP;
 
-		err = netlink_dump_start(genl_sock, skb, nlh,
-					 ops->dumpit, ops->done);
-		if (err == 0)
-			err = -EINTR;
-		return err;
+		return netlink_dump_start(genl_sock, skb, nlh,
+					  ops->dumpit, ops->done);
 	}
 
 	if (ops->doit == NULL)