clk: davinci: pll: Add of_node_put() in of_davinci_pll_init()

The variable child in the function of_davinci_pll_init takes the value
of of_get_child_by_name, which gets a node but does not put it. If child
is not put before the function returns it may cause a memory leak. Hence
put child before two return statements.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Link: https://lkml.kernel.org/r/20190804162824.6338-1-nishkadg.linux@gmail.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/davinci/pll.c

@@ -778,12 +778,15 @@ int of_davinci_pll_init(struct device *dev, struct device_node *node,
 		int i;
 
 		clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL);
-		if (!clk_data)
+		if (!clk_data) {
+			of_node_put(child);
 			return -ENOMEM;
+		}
 
 		clks = kmalloc_array(n_clks, sizeof(*clks), GFP_KERNEL);
 		if (!clks) {
 			kfree(clk_data);
+			of_node_put(child);
 			return -ENOMEM;
 		}