clk: tegra: Add missing of_node_put()

for_each_child_of_node() performs an of_node_get() on each iteration, so
before breaking out of the loop an of_node_put() is required.

Found using Coccinelle. The semantic patch used for this is as follows:

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

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

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/clk/tegra/clk-emc.c b/drivers/clk/tegra/clk-emc.c
index e1fe8f35d45c47c553997845657e09d3b71ca9a1..74e7544f861ba083f63f1d5aa886a7a90b0f295f 100644 (file)
--- a/drivers/clk/tegra/clk-emc.c
+++ b/drivers/clk/tegra/clk-emc.c
@@ -450,8 +450,10 @@ static int load_timings_from_dt(struct tegra_clk_emc *tegra,
                struct emc_timing *timing = tegra->timings + (i++);
 
                err = load_one_timing_from_dt(tegra, timing, child);
-               if (err)
+               if (err) {
+                       of_node_put(child);
                        return err;
+               }
 
                timing->ram_code = ram_code;
        }
@@ -499,9 +501,9 @@ struct clk *tegra_clk_register_emc(void __iomem *base, struct device_node *np,
                 * fuses until the apbmisc driver is loaded.
                 */
                err = load_timings_from_dt(tegra, node, node_ram_code);
+               of_node_put(node);
                if (err)
                        return ERR_PTR(err);
-               of_node_put(node);
                break;
        }