regulator: qcom-labibb: Fix missing of_node_put() in qcom_labibb_regulator_probe()

regulator: qcom-labibb: Fix missing of_node_put() in qcom_labibb_regulator_probe()

[ Upstream commit cf34ac6aa2b12fb0c3aacfdcae8acd7904b949ec ]

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

Fixes: 390af53e0411 ("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.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>