ovl: remove ovl_map_dev_ino() return value

ovl_map_dev_ino() always returns success.  Remove unnecessary return value.

Signed-off-by: youngjun <her0gyugyu@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/overlayfs/inode.c

@@ -95,7 +95,7 @@ out:
 	return err;
 }
 
-static int ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)
+static void ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)
 {
 	bool samefs = ovl_same_fs(dentry->d_sb);
 	unsigned int xinobits = ovl_xino_bits(dentry->d_sb);
@@ -108,7 +108,7 @@ static int ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)
 		 * which is friendly to du -x.
 		 */
 		stat->dev = dentry->d_sb->s_dev;
-		return 0;
+		return;
 	} else if (xinobits) {
 		/*
 		 * All inode numbers of underlying fs should not be using the
@@ -122,7 +122,7 @@ static int ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)
 		if (likely(!(stat->ino >> xinoshift))) {
 			stat->ino |= ((u64)fsid) << (xinoshift + 1);
 			stat->dev = dentry->d_sb->s_dev;
-			return 0;
+			return;
 		} else if (ovl_xino_warn(dentry->d_sb)) {
 			pr_warn_ratelimited("inode number too big (%pd2, ino=%llu, xinobits=%d)\n",
 					    dentry, stat->ino, xinobits);
@@ -151,8 +151,6 @@ static int ovl_map_dev_ino(struct dentry *dentry, struct kstat *stat, int fsid)
 		 */
 		stat->dev = OVL_FS(dentry->d_sb)->fs[fsid].pseudo_dev;
 	}
-
-	return 0;
 }
 
 int ovl_getattr(struct user_namespace *mnt_userns, const struct path *path,
@@ -251,9 +249,7 @@ int ovl_getattr(struct user_namespace *mnt_userns, const struct path *path,
 		}
 	}
 
-	err = ovl_map_dev_ino(dentry, stat, fsid);
-	if (err)
-		goto out;
+	ovl_map_dev_ino(dentry, stat, fsid);
 
 	/*
 	 * It's probably not worth it to count subdirs to get the