From f31e8d4f7b44092b6b2ab3a6b1d4079836b6955a Mon Sep 17 00:00:00 2001
From: Li RongQing <roy.qing.li@gmail.com>
Date: Thu, 23 Apr 2015 11:06:53 +0800
Subject: [PATCH] xfrm: fix the return code when xfrm_*_register_afinfo failed

If xfrm_*_register_afinfo failed since xfrm_*_afinfo[afinfo->family] had the
value, return the -EEXIST, not -ENOBUFS

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Reading git-format-patch failed