No, you don't need to change anything. MTU is typically referred as the maximum payload size of an ethernet frame without the layer 2 headers. The 802.1q VLAN header adds 2 byte and a prepended additional 2 byte protocol identifier is needed to signalize that this is a 802.1q tagged frame, thus increasing the maximum total frame size from 1518 to 1522, but not changing the actual size of the payload, aka MTU.
Any network device from the last decade capable of using VLANs should automatically allow for a maximum total frame size of 1522 bytes.