dsp: Update clk status when DSP returns error

When DSP returns error in clock or vote request
commands, update the clock status variable properly
to bail out from error scenarios.

Change-Id: Ib50e9e33b03fd77255b8719c125612686ea11b00
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>
Signed-off-by: Meng Wang <mengw@codeaurora.org>