Yep agree with the others.
As a general medical rule, there are very few if any methods of suicide compatible with organ donation due to the delays which are almost always involved. In fact the ideal conditions for organ donation involve you being in a hospital, already declared brain-dead but still being kept physically alive by machines (and not having been physically dead for any period of time). The living organs can then be harvested while you are still physically alive and so they are in the best condition and without oxygen for the shortest period of time during transplant. There are also some legal restrictions on organ donation due to suicide, although these are practical ones around the body needing examination, toxicology and autopsy, rather than any laws (as far as I know) being inherently against organ harvesting from suicide victims.