From b1c849276b5e199f94501101c07ee9cb6ced4935 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 4 Sep 2014 14:11:23 +0300
Subject: [PATCH] hyperv: NULL dereference on error

We try to call free_netvsc_device(net_device) when "net_device" is NULL.
It leads to an Oops.

Fixes: f90251c8a6d0 ('hyperv: Increase the buffer length for netvsc_channel_cb()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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