The response depends on the etiologgy of the tinnitus sir..
I found it to be useful for post traumatic/ idiopathic?! tinnitus ( tinnitus in which no cause could be found with clinical examination , neurophysiological tests and imaging )
In my practice, in patients with normal hearing, I use intra-tympanic steroids for early onset low frequency tinnitus ( may be subset of atypical Meniere's) and use gabapentin for high frequency tinnitus.
my experience with intratympanic steroid for tinnitus showed a not response in a lot of patients. The only good results were obtained in those patients with a endolymphatic hydrops determining tinnitus.