[IA64] remove warning.

This patch removes the following warning.

> linux-2.6.18-xen.hg/arch/ia64/kernel/efi.c: In function 'efi_initialize_iomem_machine_resources':
> linux-2.6.18-xen.hg/arch/ia64/kernel/efi.c:1185: warning: control reaches end of non-void function

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r 8a3dc4fdb478 arch/ia64/kernel/efi.c
--- a/arch/ia64/kernel/efi.c	Tue Jul 22 11:59:42 2008 +0100
+++ b/arch/ia64/kernel/efi.c	Thu Jul 24 14:31:08 2008 +0900
@@ -1149,7 +1149,7 @@
 }
 
 #ifdef CONFIG_PROC_IOMEM_MACHINE
-static int
+static void
 efi_initialize_iomem_machine_resources(void)
 {
 	unsigned long size;
@@ -1163,7 +1163,7 @@
 	for (size = 1024; 1; size += 1024) {
 		memmap_info = kmalloc(size, GFP_KERNEL);
 		if (memmap_info == NULL)
-			return -ENOMEM;
+			return; /* -ENOMEM, but no way to return error */
 
 		memmap.nr_entries = size;
 		set_xen_guest_handle(memmap.buffer, memmap_info);