The reg_node needs to be released through of_node_put() in the error
handling path when of_irq_get_byname() failed.

Fixes: 390af53e ("regulator: qcom-labibb: Implement short-circuit and over-current IRQs")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221203062109.115043-1-yuancan@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>