From 3dcf63677d4eb7fdfc13290c8558c301d2588fe8 Mon Sep 17 00:00:00 2001
From: David Vrabel <david.vrabel@citrix.com>
Date: Mon, 1 Sep 2014 18:52:44 +0100
Subject: [PATCH] xen/balloon: cancel ballooning if adding new memory failed

If the balloon driver is adding additional memory regions to the
balloon and add_memory() fails it will likely continuously fail so
cancel the balloon operation.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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