You would have to amend your return. I encourage you to do that if you have a modified adjusted gross income (MAGI) of less than $80,000 as a single taxpayer, or $160,000 if you are filing a joint return.
If your income is higher, you will not be eligible for a deduction and there is no reason to file.
Here's the link to TurboTax's amendment instructions:
https://ttlc.intuit.com/replies/3288565