In fact, Ephes. 5.22 is elliptical, and so when Paul gets around to saying "wives to husbands as to the Lord." and so on, he is presupposing the meaning of submission enunciated in vs. 21--namely that that wife's submission should only be offered in the context of mutual submission. When the husband is exhorted to love his wife as Christ does the church, this is another form that mutual submission takes in Christ.
Mutual submission in Christ is what submission means, not one to the other.