clk: clk-qoriq: Replace of_node_put() with __free()

Use __free() to have automatic cleanup instead of calling of_node_put()
manually.

Compiled without errors or warnings.

Signed-off-by: David Hunter <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clk-qoriq.c

···
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <dt-bindings/clock/fsl,qoriq-clockgen.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
···
 static void __init legacy_init_clockgen(struct device_node *np)
 {
 	if (!clockgen.node) {
-		struct device_node *parent_np;
-
-		parent_np = of_get_parent(np);
+		struct device_node *parent_np __free(device_node) = of_get_parent(np);
 		_clockgen_init(parent_np, true);
-		of_node_put(parent_np);
 	}
 }