Sorry if this has already been posted but saw this in the New Zealand AIP this morning
ENR 1.5 - 33
"4.17.6 If a missed approach is initiated prior to the specific missed approach point the pilot is required to track to the missed approach point and then follow the missed approach procedure. The missed approach point may be overflown above MDA."
Have to agree with other posters that have said climb straighto away. If you're going missed early, there's obviously a reason so get back to a safe height and fly the missed approach. You can always have another go at landing, no need to stay level hoping to go visual then try to salvage an approach you're probably now too high for.