iommu/mediatek-v1: Add error handle for mtk_iommu_probe

[ Upstream commit ac304c070c54413efabf29f9e73c54576d329774 ]

In the original code, we lack the error handle. This patch adds them.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20210412064843.11614-2-yong.wu@mediatek.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>
Stable-dep-of: 142e821f68cf ("iommu/mediatek-v1: Fix an error handling path in mtk_iommu_v1_probe()")
Signed-off-by: Sasha Levin <sashal@kernel.org>