HMDA allows you to report it either way. However, the new HMDA rules (beginning in 2018) don't. If you go with the rescission date, you cause examiners/auditors to have to dig to prove when the loan was funded vs. simply looking at the note date.
I know you weren't asking about 2018, but here's the new rule:
Report the …date of the action taken by the financial institution. [§1003.4(a)(8)(ii)] If the disbursement of funds takes place on a date later than the closing or account opening date, the institution may use the date of initial disbursement. [Commentary to §1003.4(a)(8)(ii) #5]
BUT:
Notwithstanding this flexibility regarding the use of the closing or account opening date in connection with reporting the date action was taken, the institution must report the origination as occurring in the year in which the origination goes to closing or the account is opened. [Commentary to §1003.4(a)(8)(ii) #5]
I always recommend going with the note date.