warning: fix init do_mounts_md c

fix warning:

  init/do_mounts_md.c: In function ‘md_run_setup’:
  init/do_mounts_md.c:282: warning: ISO C90 forbids mixed declarations and code

also, use the opportunity to put the RAID autodetection code
into a separate function - this also solves a checkpatch style warning.

No code changed:

md5:
   aa36a35faef371b05f1974ad583bdbbd  do_mounts_md.o.before.asm
   aa36a35faef371b05f1974ad583bdbbd  do_mounts_md.o.after.asm
Signed-off-by: NIngo Molnar <mingo@elte.hu>

init/do_mounts_md.c

@@ -264,13 +264,10 @@ static int __init raid_setup(char *str)
 __setup("raid=", raid_setup);
 __setup("md=", md_setup);
 
-void __init md_run_setup(void)
+static void autodetect_raid(void)
 {
-	create_dev("/dev/md0", MKDEV(MD_MAJOR, 0));
+	int fd;
 
-	if (raid_noautodetect)
-		printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n");
-	else {
 	/*
 	 * Since we don't want to detect and use half a raid array, we need to
 	 * wait for the known devices to complete their probing
@@ -279,11 +276,20 @@ void __init md_run_setup(void)
 	printk(KERN_INFO "md: If you don't use raid, use raid=noautodetect\n");
 	while (driver_probe_done() < 0)
 		msleep(100);
-		int fd = sys_open("/dev/md0", 0, 0);
+	fd = sys_open("/dev/md0", 0, 0);
 	if (fd >= 0) {
 		sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
 		sys_close(fd);
 	}
-	}
+}
+
+void __init md_run_setup(void)
+{
+	create_dev("/dev/md0", MKDEV(MD_MAJOR, 0));
+
+	if (raid_noautodetect)
+		printk(KERN_INFO "md: Skipping autodetection of RAID arrays. (raid=noautodetect)\n");
+	else
+		autodetect_raid();
 	md_setup_drive();
 }