I personally like Tolkien's works: they illustrate a profound and detailed imagination. But I have to say that he was not an initiate, given some of his own statements and reflections about his works, as well as the depth and arrangement of the symbolism presented in his literature.
He was a brilliant philologist, and a studious historian of culture and language; hence he was able to create a vivid world with an genuine atmosphere and convincing historicism. He studied the genesitic scriptures: the Bible, the Vedas, and the Germanic Eddas, hence he knew the style, flavor and archetypes contained within all religions. However, his works are imitation, not initiation, since his literature does not consciously describe an initiatic process through the symbolism he presented as a result of his own spiritual works. This is evident through a profound study of this doctrine, its comparison with his writings, and internal experience.
Also, it is signfiicant to reference his own words about his writings in the Foreward to the Second Edition of The Lord of the Rings
As for any inner meaning or 'message', it has in the intention of the author none. It is neither allegorical nor topical.
Although his text is not initiatic, it has a lot of symbolism that can be interpreted as such. Yet as for a conscious, intentional decision on the author's part towards that purpose, it is unfortunately not there.