From c4cb901ac667f81786b402ca7d69a9063e770b3a Mon Sep 17 00:00:00 2001
From: Alexander Aring <alex.aring@gmail.com>
Date: Tue, 19 Aug 2014 19:03:29 +0200
Subject: [PATCH] ieee802154: 6lowpan_rtnl: fix correct errno value

This patch correct the return value of lowpan_alloc_frag if an error
occur. Errno numbers should always be negative.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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