[PATCH 3/5] PCI: mt7621: Use helper function for_each_available_child_of_node_scoped()

[Zhang Zekun <zhangzekun11@huawei.com>]

for_each_available_child_of_node_scoped() provides a scope-based cleanup
functinality to put the device_node automatically, and we don't need to
call of_node_put() directly.  Let's simplify the code a bit with the use
of these functions.

Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
---
 drivers/pci/controller/pcie-mt7621.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c
index 9b4754a45515..16c3df1c49a1 100644
--- a/drivers/pci/controller/pcie-mt7621.c
+++ b/drivers/pci/controller/pcie-mt7621.c
@@ -258,19 +258,18 @@ static int mt7621_pcie_parse_dt(struct mt7621_pcie *pcie)
 {
 	struct device *dev = pcie->dev;
 	struct platform_device *pdev = to_platform_device(dev);
-	struct device_node *node = dev->of_node, *child;
+	struct device_node *node = dev->of_node;
 	int err;
 
 	pcie->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pcie->base))
 		return PTR_ERR(pcie->base);
 
-	for_each_available_child_of_node(node, child) {
+	for_each_available_child_of_node_scoped(node, child) {
 		int slot;
 
 		err = of_pci_get_devfn(child);
 		if (err < 0) {
-			of_node_put(child);
 			dev_err(dev, "failed to parse devfn: %d\n", err);
 			return err;
 		}
@@ -278,10 +277,8 @@ static int mt7621_pcie_parse_dt(struct mt7621_pcie *pcie)
 		slot = PCI_SLOT(err);
 
 		err = mt7621_pcie_parse_port(pcie, child, slot);
-		if (err) {
-			of_node_put(child);
+		if (err)
 			return err;
-		}
 	}
 
 	return 0;
-- 
2.17.1