ARM: mm: move initrd init code out of arm_memblock_init()

Move the ARM initrd initialisation code out of arm_memblock_init() into
its own function, so it can be cleaned up.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

arch/arm/mm/init.c

@@ -228,11 +228,8 @@ phys_addr_t __init arm_memblock_steal(phys_addr_t size, phys_addr_t align)
 	return phys;
 }
 
-void __init arm_memblock_init(const struct machine_desc *mdesc)
+static void __init arm_initrd_init(void)
 {
-	/* Register the kernel text, kernel data and initrd with memblock. */
-	memblock_reserve(__pa(KERNEL_START), KERNEL_END - KERNEL_START);
-
 #ifdef CONFIG_BLK_DEV_INITRD
 	/* FDT scan will populate initrd_start */
 	if (initrd_start && !phys_initrd_size) {
@@ -260,6 +257,14 @@ void __init arm_memblock_init(const struct machine_desc *mdesc)
 		initrd_end = initrd_start + phys_initrd_size;
 	}
 #endif
+}
+
+void __init arm_memblock_init(const struct machine_desc *mdesc)
+{
+	/* Register the kernel text, kernel data and initrd with memblock. */
+	memblock_reserve(__pa(KERNEL_START), KERNEL_END - KERNEL_START);
+
+	arm_initrd_init();
 
 	arm_mm_memblock_reserve();