msm: msm_bus: fix memory leak in msm_bus_fabric_probe

Certain bus driver data structures do not get freed in the error
paths of msm_bus_fabric_probe. Fix the memory leak.

Change-Id: I7fd890612e33ca519fa4d94edde1954b60b8ef06
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>