Not all patterns tell you a row gauge. Most likely the pattern will just tell you to knit for however many inches, instead of specifying a number of rows. The it won't matter what your row gauge is, you just keep knitting until the piece is a certain length.
Although the row gauge is not listed, it probably won't be 22. Knit stitches are actually rectangular, not square. The row guage is likely to be around 28, if the stitch gauge is 22.