Return: Quiz IV in Kotlin

Quiz: What would this code produce if we were to copy-paste it in a code editor and run it?

fun greetAndReturn(): String {
    return "How are you doing?"
    println("Hey bro!")
}

fun mainFunction() {
    val question: String = greetAndReturn()
    println(question)
}

Important Note:

Do not use an actual code editor to get the answer! It would defy the whole purpose of the quiz!