From 6e930045abe51013ee3b47eaeb5aef4bc5a35218 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Fri, 9 Mar 2012 13:37:48 +0100
Subject: [PATCH] iommu/amd: Fix double free of mem-region in error-path

When ioremap_nocache fails in iommu initialization the code
calls release_mem_region immediatly. But the function is
called again when the propagates into the upper init
functions leading to a double-free. Fix that.

Reported-by: Don Dutile <ddutile@redhat.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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