x86: move saving e820_saved to setup_memory_map

so other path that will override memory_setup or
machine_specific_memory_setup could have e820_saved too.
Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Bernhard Walle <bwalle@suse.de>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/e820.c

@@ -1294,8 +1294,6 @@ char *__init default_machine_specific_memory_setup(void)
 		e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
 	}
 
-	memcpy(&e820_saved, &e820, sizeof(struct e820map));
-
 	/* In case someone cares... */
 	return who;
 }
@@ -1313,8 +1311,12 @@ char * __init __attribute__((weak)) memory_setup(void)
 
 void __init setup_memory_map(void)
 {
+	char *who;
+
+	who = memory_setup();
+	memcpy(&e820_saved, &e820, sizeof(struct e820map));
 	printk(KERN_INFO "BIOS-provided physical RAM map:\n");
-	e820_print_map(memory_setup());
+	e820_print_map(who);
 }
 
 #ifdef CONFIG_X86_64