Not sure the tree was Jesus although I can see a good allegory there.
I'd say God blocked the tree so we (humans) would NOT live forever in a sinful state. Then, when we "eat" of Jesus now and become new born again creatures, I can see Him being THE tree of life and all who love Him will feast upon Him and His Words. JMO.
He is DE-VINE and we are de branches...abide, abide, abide...
