generic/506: call _require_quota before _qmount

The g/506 fails on some filesystems (e.g. overlay) which doesn't
support prjquota:

  MOUNT_OPTIONS =  -o prjquota
  qmount failed

To avoid this failure, call _require_quota before doing real quota
mount.

Signed-off-by: Zorro Lang <zlang@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
1 file changed