1. If the void wants to die bad enough he could let the hv undo him and then stay dead like he did with the lightning blast (one could make a case that lightining blast would temp killing him regardless of his will though, but Im not among them).
But even in conditions like that, SM would be less willing to kill than thor, so more of his teammates and even himself might end up dead as the void lashes out in frustration.
2. Void crushes him