msm: ADSPRPC: Error handling during pd restart

Bail during static pd creation, if we failed to unmap memory
during audiopd restart.

Change-Id: Idcaf2f57c6a1e3ab3af7382c023a62bfeed1d95e
Acked-by: Vishnu Karthik D <vikarthi@qti.qualcomm.com>
Signed-off-by: Tharun Kumar Merugu <mtharu@codeaurora.org>