The entire Russia Investigation and anything that results are "fruits of the poisonous tree," and, if the memo is accurate, charges on any involved should be dismissed, thrown out and the entire investigation should be immediately stopped. That's what would result in the real world of The Law, but we all know that Washington operates under their own, "special" rules.
If I had obtained any warrant with false information, not only would the person I arrested be released with the apologies of the court, but any and ALL evidence I gained as a result would be suppressed and thrown out, not to mention that I would have been prosecuted for false swearing on a court affidavit.