Correctable errors

[moref]

Team A is awarded two free throws after being fouled while in the act of shooting, but the first attempt is missed and the ball is rebounded ny team B. Team B then dribbles down to the other end and gets fouled ,but they are not in the one and one. Before putting the ball back in play the referee realizes that team A was supposed to get another free throw attempt. What should be done?
I should know this ,but I have never had this happen to me until last night. Thank God it was a junior high game. We went to the other end and let the player from Team A shoot the other free throw which he made, and then we brought the ball back to the point of interruption and let Team B inbound it. Was we right or not? I was a little embarrased about the whole thing. I been doing Varsity games for 10 years and I just could not remember the ruling, but I sure was glad it was Junior High. We did catch the mistake before we had two dead balls.