Ultimately, Lehi’s white race is destroyed as described at the end of the Book of Mormon. This makes Lehi’s prediction, via Joseph Smith, Jr. incorrect…
“And now, Joseph, my last-born, whom I have brought out of the wilderness of mine afflictions, may the Lord bless thee forever, for thy seed shall not utterly be destroyed.”
“Wherefore, because of this covenant thou art blessed; for thy seed shall not be destroyed, for they shall hearken unto the words of the book.”
Joseph Smith, Jr., Book of Mormon – 2 Nephi 3 (Salt Lake City, UT: The Church of Jesus Christ of Latter-day Saints, 2022/online edition), 3, 23.