ext4: remove duplicate call to ext4_bread() in ext4_init_new_dir()

This fixes a buffer cache leak when creating a directory, introduced
in commit a774f9c2.
Signed-off-by: Guo Chao <yan@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Tao Ma <boyu.mt@taobao.com>

fs/ext4/namei.c

@@ -2368,7 +2368,6 @@ static int ext4_init_new_dir(handle_t *handle, struct inode *dir,
 	}
 
 	inode->i_size = EXT4_I(inode)->i_disksize = blocksize;
-	dir_block = ext4_bread(handle, inode, 0, 1, &err);
 	if (!(dir_block = ext4_bread(handle, inode, 0, 1, &err))) {
 		if (!err) {
 			err = -EIO;