Three commits fixing some issues introduced with the recent IOMMU changes we merged.
Thanks to: Alexey Kardashevskiy
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Merge tag 'powerpc-5.15-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Three commits fixing some issues introduced with the recent IOMMU
changes we merged.
Thanks to Alexey Kardashevskiy"
* tag 'powerpc-5.15-6' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries/iommu: Create huge DMA window if no MMIO32 is present
powerpc/pseries/iommu: Check if the default window in use before removing it
powerpc/pseries/iommu: Use correct vfree for it_map