iommu: apple-dart: Remove unnecessary NULL check before free_io_pgtable_ops()
free_io_pgtable_ops() checks for NULL pointers internally. Remove unneeded NULL check here. Signed-off-by:Chen Ni <nichen@iscas.ac.cn> Link: https://lore.kernel.org/r/20250422072511.1334243-1-nichen@iscas.ac.cn Signed-off-by:
Joerg Roedel <jroedel@suse.de>
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