From 19762d7095e6392b6ec56c363a6f29b2119488c2 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Thu, 28 May 2015 18:41:26 +0200
Subject: [PATCH] iommu: Propagate error in add_iommu_group

Make sure any errors reported from the IOMMU drivers get
progapated back to the IOMMU core.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
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