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When krealloc() fails and pctrl->functions is NULL, no error return code of berlin_pinctrl_build_state() is assigned. To fix this bug, ret is assigned with -ENOMEM when pctrl->functions is NULL. Signed-off-by: Meng Tang <tangmeng@uniontech.com> Link: https://lore.kernel.org/r/20220303080206.16463-1-tangmeng@uniontech.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>