memory: tegra: mc: Add missing of_node_put()

Author: Amitoj Kaur Chawla <amitoj1606@gmail.com>

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

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

// 
@@
expression e;
local idexpression n;
@@

 for_each_child_of_node(..., n) {
   ... when != of_node_put(n)
       when != e = n
(
   return n;
|
+  of_node_put(n);
?  return ...;
)
   ...
 }
// 

Signed-off-by: Amitoj Kaur Chawla 
Signed-off-by: Thierry Reding

---
 drivers/memory/tegra/mc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
 
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
index 85ce4be..a4803ac 100644
--- a/drivers/memory/tegra/mc.c
+++ b/drivers/memory/tegra/mc.c
@@ -186,8 +186,10 @@ static int load_timings(struct tegra_mc *mc, struct device_node *node)
 		timing = &mc->timings[i++];
 
 		err = load_one_timing(mc, timing, child);
-		if (err)
+		if (err) {
+			of_node_put(child);
 			return err;
+		}
 	}
 
 	return 0;
@@ -210,9 +212,9 @@ static int tegra_mc_setup_timings(struct tegra_mc *mc)
 			continue;
 
 		err = load_timings(mc, node);
+		of_node_put(node);
 		if (err)
 			return err;
-		of_node_put(node);
 		break;
 	}

memory: tegra: mc: Add missing of_node_put()

qlambert

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