Inbounding Question

[TwoDot]

Last night I had worked my first game of the year, sophmore boys. I had an unusual situation that I need some guidance on the correct procedure (did I mess up or not).
Middle of third quarter not a very close game Team A up by about 25 points, I had an out of bounds call on the baseline, time-out called by B who is going to set up a play for the inbounds. Coming out of the timeout every one lines up, I blow the whistle to signal ready, and bounce the ball to the player who then fumbles the ball back inbounds. I blew the play dead and then handed the ball to the thrower. Was this the proper call/procedure? No one questioned the call but in my mind it was not any different than when the free-thrower fumbles the ball also. Just looking for some comments. Thanks!