meson-gx-socinfo: add missing of_node_put after of_device_is_available

Add an of_node_put when a tested device node is not available.

The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):

// <smpl>
@@
identifier f;
local idexpression e;
expression x;
@@

e = f(...);
... when != of_node_put(e)
    when != x = e
    when != e = x
    when any
if (<+...of_device_is_available(e)...+>) {
  ... when != of_node_put(e)
(
  return e;
|
+ of_node_put(e);
  return ...;
)
}
// </smpl>

Fixes: a9daaba2965e8 ("soc: Add Amlogic SoC Information driver")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

diff --git a/drivers/soc/amlogic/meson-gx-socinfo.c b/drivers/soc/amlogic/meson-gx-socinfo.c
index c8d138d85f34b464f3286247b4863dd471dbf0ac..bca34954518ec00602990e266e1f9b1a4181e341 100644 (file)
--- a/drivers/soc/amlogic/meson-gx-socinfo.c
+++ b/drivers/soc/amlogic/meson-gx-socinfo.c
@@ -132,8 +132,10 @@ static int __init meson_gx_socinfo_init(void)
                return -ENODEV;
 
        /* check if interface is enabled */
-       if (!of_device_is_available(np))
+       if (!of_device_is_available(np)) {
+               of_node_put(np);
                return -ENODEV;
+       }
 
        /* check if chip-id is available */
        if (!of_property_read_bool(np, "amlogic,has-chip-id"))