From 3b12a0d15bd1559e72ad21d9d807fd2a6706f0ab Mon Sep 17 00:00:00 2001
From: Jon Mason <jon.mason@intel.com>
Date: Mon, 15 Jul 2013 13:23:47 -0700
Subject: [PATCH] NTB: Add Error Handling in ntb_device_setup

If an error is encountered in ntb_device_setup, it is possible that the
spci_cmd isn't populated.  Writes to the offset can result in a NULL
pointer dereference.  This issue is easily encountered by running in
NTB-RP mode, as it currently is not supported and will generate an
error.  To get around this issue, return if an error is encountered
prior to attempting to write to the spci_cmd offset.

Signed-off-by: Jon Mason <jon.mason@intel.com>
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