Generally speaking, scholars view mythology as one aspect of religion, but not its only aspect.

Myth is generally defined as traditional stories - purportedly true - that impart some sort of cultural or social truth upon a population and usually explain the origins of a particular aspect of that culture or other natural phenomenon (why the sun rises in the East, for example). Mythology is the body of those myths. Myths act in similar ways to fairy tales, folklore, legends and other traditional stories aimed at imparting social and cultural values to the listener. Mythology, however, usually has a super-natural element, whether gods, demigods, or other heroes and is usually directly connected to some religious tradition (Greek Mythology and the Ancient Greek Religion; Christian Mythology and the Christian religion; etc.), whereas folklore, fairy tales, or legends are usually disconnected from religion.

Most religions contain myths as one element of their larger structure, but also contain elements of ritual, morality, mysticism, and a more developed theology above and beyond just myth. So would the creation myth as found in Genesis 1 (or the different one found in Genesis 2) be considered myth? You bet it is in academia. Same thing with other biblical stories like the Flood, the Temptation of Eve, or the Resurrection. But it's important to note that all religions, Christianity included, are more than just the sum of their myths.