phy: miphy28lp: add missing of_node_put

for_each_child_of_node performs an of_node_get on each iteration,
so a return from the middle of the loop requires an of_node_put.

A simplified version of the semantic patch that finds this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
expression root,e;
local idexpression child;
@@

 for_each_child_of_node(root, child) {
   ... when != of_node_put(child)
       when != e = child
(
   return child;
|
*  return ...;
)
   ...
 }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c
index c47b56b4a2b8892810f00179a53e9eceba7c612c..3acd2a1808dfbf9ccfa5d58467b6defdb793c2bb 100644 (file)
--- a/drivers/phy/phy-miphy28lp.c
+++ b/drivers/phy/phy-miphy28lp.c
@@ -1226,15 +1226,18 @@ static int miphy28lp_probe(struct platform_device *pdev)
 
                miphy_phy = devm_kzalloc(&pdev->dev, sizeof(*miphy_phy),
                                         GFP_KERNEL);
-               if (!miphy_phy)
-                       return -ENOMEM;
+               if (!miphy_phy) {
+                       ret = -ENOMEM;
+                       goto put_child;
+               }
 
                miphy_dev->phys[port] = miphy_phy;
 
                phy = devm_phy_create(&pdev->dev, child, &miphy28lp_ops);
                if (IS_ERR(phy)) {
                        dev_err(&pdev->dev, "failed to create PHY\n");
-                       return PTR_ERR(phy);
+                       ret = PTR_ERR(phy);
+                       goto put_child;
                }
 
                miphy_dev->phys[port]->phy = phy;
@@ -1242,11 +1245,11 @@ static int miphy28lp_probe(struct platform_device *pdev)
 
                ret = miphy28lp_of_probe(child, miphy_phy);
                if (ret)
-                       return ret;
+                       goto put_child;
 
                ret = miphy28lp_probe_resets(child, miphy_dev->phys[port]);
                if (ret)
-                       return ret;
+                       goto put_child;
 
                phy_set_drvdata(phy, miphy_dev->phys[port]);
                port++;
@@ -1255,6 +1258,9 @@ static int miphy28lp_probe(struct platform_device *pdev)
 
        provider = devm_of_phy_provider_register(&pdev->dev, miphy28lp_xlate);
        return PTR_ERR_OR_ZERO(provider);
+put_child:
+       of_node_put(child);
+       return ret;
 }
 
 static const struct of_device_id miphy28lp_of_match[] = {