clk: scpi: 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.

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>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/clk-scpi.c

@@ -292,6 +292,7 @@ static int scpi_clocks_probe(struct platform_device *pdev)
 		ret = scpi_clk_add(dev, child, match);
 		if (ret) {
 			scpi_clocks_remove(pdev);
+			of_node_put(child);
 			return ret;
 		}
 	}