Regression in next-20181219 with iommu

[Tony Lindgren <tony@xxxxxxxxxxx>]

Hi all,

FYI, looks like there's an iommu regression in next-20181219
caused by commit 641fb0efbff0 ("iommu/of: Don't call
iommu_ops->add_device directly").

There's a fix being discussed at:

https://lore.kernel.org/patchwork/patch/1023860/

Regards,

Tony