msm: adsprpc: Clean DMA handles maps in case of error

Free DMA handle fd maps in case of error while creating
map for other handles.

Change-Id: Iae062bc958a58f38e4424fab88b451813478ae97
Acked-by: Deepika Singh <dsi@qti.qualcomm.com>
Signed-off-by: Vamsi krishna Gattupalli <vgattupa@codeaurora.org>