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Ensure child node references are decremented properly in the error path. Signed-off-by: Lu Hongfei <luhongfei@vivo.com> Link: https://lore.kernel.org/r/20230606070201.14249-1-luhongfei@vivo.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>