ide: call ide_proc_register_driver() later

Call ide_proc_register_driver() in ide*_setup() (just before
ide*_add_settings() call) instead of in ->probe method.

Despite being basically a preparation for /proc/ide/hd*/settings
rework this is a nice cleanup in itself.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 607af5d..34a1aea 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1924,6 +1924,8 @@
 		cd->devinfo.handle = NULL;
 		return 1;
 	}
+
+	ide_proc_register_driver(drive, cd->driver);
 	ide_cdrom_add_settings(drive);
 	return 0;
 }
@@ -2134,8 +2136,6 @@
 
 	ide_init_disk(g, drive);
 
-	ide_proc_register_driver(drive, &ide_cdrom_driver);
-
 	kref_init(&info->kref);
 
 	info->drive = drive;
@@ -2150,7 +2150,6 @@
 	g->driverfs_dev = &drive->gendev;
 	g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
 	if (ide_cdrom_setup(drive)) {
-		ide_proc_unregister_driver(drive, &ide_cdrom_driver);
 		ide_cd_release(&info->kref);
 		goto failed;
 	}