From 188c517a050ec5b123e72cab76ea213721e5bd9d Mon Sep 17 00:00:00 2001
From: Lin Ming <mlin@ss.pku.edu.cn>
Date: Tue, 25 Sep 2012 15:17:07 +0000
Subject: [PATCH] ipv6: return errno pointers consistently for fib6_add_1()

fib6_add_1() should consistently return errno pointers,
rather than a mixture of NULL and errno pointers.

Signed-off-by: Lin Ming <mlin@ss.pku.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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