soc: qcom: glink_ssr: Send rx_done even on error

Glink ssr client doesnot send rx_done, if there is any error in
received data in notify_rx. This leads to memory leak at remote
subsystem which is waiting for tx_done to free memory.

Send rx_done even if there is error in received data.

CRs-Fixed: 2213715
Change-Id: Id4f186307a4d72e8f07a70452302958f89cc05cb
Signed-off-by: Dhoat Harpal <hdhoat@codeaurora.org>