All good deeds get cheshboned in, regardless of intent. If you give tzedaka, but don’t really think about what you are doing, you still get the credit. It might be BETTER if you did it for the right reason, but much as kavana is a good thing for certain types of mitzvos, you still get brownie points for doing them. Do you think every guy who gets up to lay tefillin in shul on a freezing winter morning, WANTS to????? But still, he does it.
Every chessed I do is for a “selfish” reason. It makes me feel good. So I guess technically, I am not doing it l’shma. Does the fact that I derive a benefit make it any less worthy????