[PATCH AUTOSEL 4.19 09/15] ARM: hisi: Add missing of_node_put after of_find_compatible_node

[Sasha Levin]

From: Peng Wu <wupeng58 at huawei.com>

[ Upstream commit 9bc72e47d4630d58a840a66a869c56b29554cfe4 ]

of_find_compatible_node  will increment the refcount of the returned
device_node. Calling of_node_put() to avoid the refcount leak

Signed-off-by: Peng Wu <wupeng58 at huawei.com>
Signed-off-by: Wei Xu <xuwei5 at hisilicon.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 arch/arm/mach-hisi/platsmp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-hisi/platsmp.c b/arch/arm/mach-hisi/platsmp.c
index da5689ababf7..d7fbfb6d293d 100644
--- a/arch/arm/mach-hisi/platsmp.c
+++ b/arch/arm/mach-hisi/platsmp.c
@@ -70,14 +70,17 @@ static void __init hi3xxx_smp_prepare_cpus(unsigned int max_cpus)
 		}
 		ctrl_base = of_iomap(np, 0);
 		if (!ctrl_base) {
+			of_node_put(np);
 			pr_err("failed to map address\n");
 			return;
 		}
 		if (of_property_read_u32(np, "smp-offset", &offset) < 0) {
+			of_node_put(np);
 			pr_err("failed to find smp-offset property\n");
 			return;
 		}
 		ctrl_base += offset;
+		of_node_put(np);
 	}
 }
 
@@ -163,6 +166,7 @@ static int hip01_boot_secondary(unsigned int cpu, struct task_struct *idle)
 	if (WARN_ON(!node))
 		return -1;
 	ctrl_base = of_iomap(node, 0);
+	of_node_put(node);
 
 	/* set the secondary core boot from DDR */
 	remap_reg_value = readl_relaxed(ctrl_base + REG_SC_CTRL);
-- 
2.35.1