[InstrProfiling] Fix emitting runtime hook once

https://reviews.llvm.org/D134254 introduced an issue on Fuchsia
target, which does not unconditionally emit runtime hook.
It used containsProfilingIntrinsics(M) after intrinsics are lowered.
So, this patch fixes the issue by capturing the result of that
function invocation before intrinsics are lowered.

Differential Revision: https://reviews.llvm.org/D134841