ext4: fix project quota accounting without quota limits enabled

We should always transfer quota accounting, regardless of whether
quota limits are enabled.

Steps to reproduce:
  # mkfs.ext4 /dev/sda4 -O quota,project
  # mount /dev/sda4 /mnt/test
  # cp /bin/bash /mnt/test
  # chattr -p 123 /mnt/test/bash
  # quota -v -P 123
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

fs/ext4/ioctl.c

@@ -308,6 +308,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 	kprojid_t kprojid;
 	struct ext4_iloc iloc;
 	struct ext4_inode *raw_inode;
+	struct dquot *transfer_to[MAXQUOTAS] = { };
 
 	if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
 			EXT4_FEATURE_RO_COMPAT_PROJECT)) {
@@ -361,9 +362,6 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 	if (err)
 		goto out_stop;
 
-	if (sb_has_quota_limits_enabled(sb, PRJQUOTA)) {
-		struct dquot *transfer_to[MAXQUOTAS] = { };
-
 	transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
 	if (!IS_ERR(transfer_to[PRJQUOTA])) {
 		err = __dquot_transfer(inode, transfer_to);
@@ -371,7 +369,7 @@ static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
 		if (err)
 			goto out_dirty;
 	}
-	}
+
 	EXT4_I(inode)->i_projid = kprojid;
 	inode->i_ctime = ext4_current_time(inode);
 out_dirty: