ARM: shmobile: rcar-gen2: Remove unneeded once handling

rcar_gen2_pm_init() is only called from the
smp_operations.smp_prepare_cpus() callback, which is called at most
once.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/116ef21e5f495432d913315bdc25fbc30edcf2e1.1693409184.git.geert+renesas@glider.be

Author: geertu

arch/arm/mach-shmobile/pm-rcar-gen2.c

@@ -46,16 +46,12 @@ void __init rcar_gen2_pm_init(void)
 {
 	void __iomem *p;
 	u32 bar;
-	static int once;
 	struct device_node *np;
 	bool has_a7 = false;
 	bool has_a15 = false;
 	struct resource res;
 	int error;
 
-	if (once++)
-		return;
-
 	for_each_of_cpu_node(np) {
 		if (of_device_is_compatible(np, "arm,cortex-a15"))
 			has_a15 = true;