mdm: ipa3: fixing clock gating issue when auto config is disabled

when auto config is disabled get_ep_info ioctl returns error
without decrementing the clock count due to which clock is
not getting gated.

Change-Id: I1ae6a7e3074861351e4ed61c7d83f96d55de721b
Signed-off-by: sivakanth reddy vaka <svaka@codeaurora.org>