It was unanimous, as legal Scholar Ed Whelan points out on NRO's Bench Memos blog:

In its unanimous ruling today in Hosanna-Tabor Evangelical Lutheran Church v. EEOC, the Supreme Court held that the Establishment Clause and the Free Exercise Clause bar ministers from invoking the employment-discrimination laws against the religious organizations that employ them.

Chief Justice Roberts’s opinion on behalf of the entire Court affirms that the so-called “ministerial exception” to employment-discrimination laws is firmly rooted in the First Amendment’s Religion Clauses, including the Court’s decisions establishing that “it is impermissible for the government to contradict a church’s determination of who can act as its ministers.” The opinion thus rejects the remarkably hostile contentions of the Obama administration that there is no general ministerial exception and that religious organizations are limited to the right to freedom of association that labor unions and social clubs enjoy.