Correctable Error

Have my first correctable error:

Team A is fouled and we give 1-1 miss first. Team B rebounds and goes into front court. While ball is in possesion of Team B, scorer gets my attention & said it should of been 2 shots. I blow whistle and we give Team A one more shots with lane cleared. Shot is missed and we then give Team B ball back at point of interruption. Correct procedure or should we of shot 2nd shot & play from there...... put time back on??