You are going to have to file part-year resident state tax returns for MA and GA. When you began living/working in GA you became subject to GA income tax. You need to have your employer change the withholding to GA instead of MA going forward.
https://ttlc.intuit.com/questions/1901560-how-do-i-file-if-i-moved-to-a-different-state-last-year
https://ttlc.intuit.com/questions/1901227-how-do-i-file-a-part-year-state-return
https://ttlc.intuit.com/questions/2895983-how-do-i-allocate-split-income-for-a-part-year-state-retur...
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