In this case, you probably do not want the loop in the output to loop, as you have only one value in the input to map to it. You have two choices here:
Unroll the loop - Unrolling the loop is done by right-clicking on the output looping map element and selecting Unroll Loop. This makes a separate element that does not loop, and then you can map it normally. The loop still exists in the original map element, which you do not need to map.
Use FixedLoop - This loop function emits the loop a fixed number of times, by default once. Just use this as the loop expression for the output element and then map the elements normally.