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Add a call to of_node_put() to release the reference after the usage.
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How do you think about to use the attribute “__free(device_node)”? https://elixir.bootlin.com/linux/v6.18-rc3/source/include/linux/of.h#L138 https://elixir.bootlin.com/linux/v6.18-rc3/source/drivers/iommu/of_iommu.c#L...
Regards, Markus