[PATCH] i386: Convert some functions to __init to avoid MODPOST warnings

o Some functions which should have been in init sections as they are called
  only once. Put them in init sections. Otherwise MODPOST generates warning
  as these functions are placed in .text and they end up accessing something
  in init sections.

WARNING: vmlinux - Section mismatch: reference to .init.text:migration_init
from .text between 'do_pre_smp_initcalls' (at offset 0xc01000d1) and
'run_init_process'

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>
diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 1df506d..4b31ad7 100644
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -495,7 +495,7 @@
 #endif
 
 /* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __attribute__((weak)) memory_setup(void)
+char * __init __attribute__((weak)) memory_setup(void)
 {
 	return machine_specific_memory_setup();
 }