autofs4: fix sparse warning in waitq.c:autofs4_expire_indirect()

Re-order some code in expire.c:autofs4_expire_indirect() to avoid compile
warning, reported by Harvey Harrison:

 CHECK   fs/autofs4/expire.c
fs/autofs4/expire.c:383:2: warning: context imbalance in
'autofs4_expire_indirect' - unexpected unlock
Signed-off-by: Ian Kent <raven@themaw.net>
Reviewed-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/autofs4/expire.c

@@ -333,7 +333,7 @@ static struct dentry *autofs4_expire_indirect(struct super_block *sb,
 			/* Can we expire this guy */
 			if (autofs4_can_expire(dentry, timeout, do_now)) {
 				expired = dentry;
-				break;
+				goto found;
 			}
 			goto next;
 		}
@@ -352,7 +352,7 @@ static struct dentry *autofs4_expire_indirect(struct super_block *sb,
 				inf->flags |= AUTOFS_INF_EXPIRING;
 				spin_unlock(&sbi->fs_lock);
 				expired = dentry;
-				break;
+				goto found;
 			}
 			spin_unlock(&sbi->fs_lock);
 		/*
@@ -363,7 +363,7 @@ static struct dentry *autofs4_expire_indirect(struct super_block *sb,
 			expired = autofs4_check_leaves(mnt, dentry, timeout, do_now);
 			if (expired) {
 				dput(dentry);
-				break;
+				goto found;
 			}
 		}
 next:
@@ -371,18 +371,16 @@ static struct dentry *autofs4_expire_indirect(struct super_block *sb,
 		spin_lock(&dcache_lock);
 		next = next->next;
 	}
-
-	if (expired) {
-		DPRINTK("returning %p %.*s",
-			expired, (int)expired->d_name.len, expired->d_name.name);
-		spin_lock(&dcache_lock);
-		list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
-		spin_unlock(&dcache_lock);
-		return expired;
-	}
 	spin_unlock(&dcache_lock);
-
 	return NULL;
+
+found:
+	DPRINTK("returning %p %.*s",
+		expired, (int)expired->d_name.len, expired->d_name.name);
+	spin_lock(&dcache_lock);
+	list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
+	spin_unlock(&dcache_lock);
+	return expired;
 }
 
 /* Perform an expiry operation */