[PATCH] Can't open CDROM device for writing

Opening a CDROM device for writing no longer works, because cdrom_open()
returns -EROFS even if cdrom_open_write() succeeds.

This fixes it. 
Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/cdrom/cdrom.c

@@ -901,6 +901,7 @@ int cdrom_open(struct cdrom_device_info *cdi, struct inode *ip, struct file *fp)
 				goto err;
 			if (cdrom_open_write(cdi))
 				goto err;
+			ret = 0;
 		}
 	}