btrfs: rename err to ret in btrfs_rmdir()

Unify naming of return value to the preferred way.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -4645,7 +4645,7 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
 {
 	struct inode *inode = d_inode(dentry);
 	struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info;
-	int err = 0;
+	int ret = 0;
 	struct btrfs_trans_handle *trans;
 	u64 last_unlink_trans;
 	struct fscrypt_name fname;
@@ -4661,33 +4661,33 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
 		return btrfs_delete_subvolume(BTRFS_I(dir), dentry);
 	}
 
-	err = fscrypt_setup_filename(dir, &dentry->d_name, 1, &fname);
-	if (err)
-		return err;
+	ret = fscrypt_setup_filename(dir, &dentry->d_name, 1, &fname);
+	if (ret)
+		return ret;
 
 	/* This needs to handle no-key deletions later on */
 
 	trans = __unlink_start_trans(BTRFS_I(dir));
 	if (IS_ERR(trans)) {
-		err = PTR_ERR(trans);
+		ret = PTR_ERR(trans);
 		goto out_notrans;
 	}
 
 	if (unlikely(btrfs_ino(BTRFS_I(inode)) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
-		err = btrfs_unlink_subvol(trans, BTRFS_I(dir), dentry);
+		ret = btrfs_unlink_subvol(trans, BTRFS_I(dir), dentry);
 		goto out;
 	}
 
-	err = btrfs_orphan_add(trans, BTRFS_I(inode));
-	if (err)
+	ret = btrfs_orphan_add(trans, BTRFS_I(inode));
+	if (ret)
 		goto out;
 
 	last_unlink_trans = BTRFS_I(inode)->last_unlink_trans;
 
 	/* now the directory is empty */
-	err = btrfs_unlink_inode(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
+	ret = btrfs_unlink_inode(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
 				 &fname.disk_name);
-	if (!err) {
+	if (!ret) {
 		btrfs_i_size_write(BTRFS_I(inode), 0);
 		/*
 		 * Propagate the last_unlink_trans value of the deleted dir to
@@ -4709,7 +4709,7 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
 	btrfs_btree_balance_dirty(fs_info);
 	fscrypt_free_filename(&fname);
 
-	return err;
+	return ret;
 }
 
 /*