I wouldn't think so. I would think the avoidance responses were there first and when consciousness emerged in evolutionary history, it gave subjective form to things like avoidance behavior and part of that was suffering.
I don't see why it would be necessary for consciousness. There are some people that claim that it's necessary, but we can easily imagine a lifeform that just does cognitive computations without experiencing them. Maybe those computations just gave rise to consciousness as a byproduct.
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H̓̇̅̉yͤ͏mͬ͂ͧn͑̽̽̌ͪ̑͐͟o̴͊̈́͑̇m͛͌̓ͦ̑aͫ̽ͤ̇n̅̎͐̒ͫ͐c̆ͯͫ̋ ̔̃́eͯ͒rͬͬ̄҉
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