If you’re going to do multiple exercises in order on a leg workout day, it’s preferable that you do deadlifts first, right after your warmup. Deadlifts are a complex and demanding exercise, so it’s best to do them while you’re still fresh both physically and mentally. Particularly if you’re training at a well-equipped gym, it’s much safer to sit down for some hip abductors/adductors after a deadlift than going for deadlifts with sore legs.