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Add the missing calls to fwnode_handle_put(child) to avoid memory leaks in the error paths.
I suggest to apply a goto chain for a while. https://wiki.sei.cmu.edu/confluence/display/c/MEM12-C.+Consider+using+a+goto...
Will the application of scope-based resource management become feasible with another delay? https://elixir.bootlin.com/linux/v6.10-rc3/source/include/linux/cleanup.h#L8
Regards, Markus