affs: use semaphore_init instead of init_MUTEX

The usage of these "mutex" is non obvious and probably a completion
in some places. Make it them semaphores.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>

fs/affs/super.c

@@ -113,8 +113,8 @@ static void init_once(void *foo)
 {
 	struct affs_inode_info *ei = (struct affs_inode_info *) foo;
 
-	init_MUTEX(&ei->i_link_lock);
-	init_MUTEX(&ei->i_ext_lock);
+	semaphore_init(&ei->i_link_lock);
+	semaphore_init(&ei->i_ext_lock);
 	inode_init_once(&ei->vfs_inode);
 }