net: phy: mdio: add missing of_node_put

for_each_available_child_of_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

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

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

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

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/mdio-mux-mmioreg.c b/drivers/net/phy/mdio-mux-mmioreg.c
index 2377c13..7fde454 100644 (file)
--- a/drivers/net/phy/mdio-mux-mmioreg.c
+++ b/drivers/net/phy/mdio-mux-mmioreg.c
@@ -113,12 +113,14 @@ static int mdio_mux_mmioreg_probe(struct platform_device *pdev)
                if (!iprop || len != sizeof(uint32_t)) {
                        dev_err(&pdev->dev, "mdio-mux child node %s is "
                                "missing a 'reg' property\n", np2->full_name);
+                       of_node_put(np2);
                        return -ENODEV;
                }
                if (be32_to_cpup(iprop) & ~s->mask) {
                        dev_err(&pdev->dev, "mdio-mux child node %s has "
                                "a 'reg' value with unmasked bits\n",
                                np2->full_name);
+                       of_node_put(np2);
                        return -ENODEV;
                }
        }