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irqchip/realtek-rtl: Fix refcount leak in map_interrupts

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[ Upstream commit eff4780f83 ]

of_find_node_by_phandle() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
This function doesn't call of_node_put() in error path.
Call of_node_put() directly after of_property_read_u32() to cover
both normal path and error path.

Fixes: 9f3a0f34b8 ("irqchip: Add support for Realtek RTL838x/RTL839x interrupt controller")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220601080930.31005-7-linmq006@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Miaoqian Lin 2022-06-01 12:09:30 +04:00 committed by Greg Kroah-Hartman
parent cc5984cf27
commit e85b1b797d
1 changed files with 1 additions and 1 deletions
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2
drivers/irqchip/irq-realtek-rtl.c
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@ -134,9 +134,9 @@ static int __init map_interrupts(struct device_node *node, struct irq_domain *do
if (!cpu_ictl)
return -EINVAL;
ret = of_property_read_u32(cpu_ictl, "#interrupt-cells", &tmp);
of_node_put(cpu_ictl);
if (ret || tmp != 1)
return -EINVAL;
of_node_put(cpu_ictl);
cpu_int = be32_to_cpup(imap + 2);
if (cpu_int > 7 || cpu_int < 2)