Yes, and in PFS your first animal companion comes fully trained. Technically, the 3 tricks per point of Int is a house rule (the Core Rules caps it out at six tricks), but it is a house rule that PFS uses. That means that raising your companion's intelligence raises the number of tricks your companion can know.
Keep in mind that you may be expected to roll to command your companion to do anything until you have a +9 to the Handle Animal skill (and +11 when your companion is injured).
Actually this is incorrect. In PFS your companion starts only knowing the 1 bonus trick. All other tricks must be trained by making a check after an adventure. (Same time you'd make your daily job check.) The max tricks your companion knows is 3 tricks per point of INT, bonus tricks earned threw level ups do not count against the limit.
I would seriously recommend not dumping CHA or you could have a hard time ever getting your companion to do anything.