soc: qcom: pdr: Fix error return code in pdr_register_listener

Fix to return the error code -EREMOTEIO from pdr_register_listener
rather than 0.

Fixes: fbe639b44a ("soc: qcom: Introduce Protection Domain Restart helpers")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Link: https://lore.kernel.org/r/20201125065034.154217-1-miaoqinglang@huawei.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/soc/qcom/pdr_interface.c

@@ -153,7 +153,7 @@ static int pdr_register_listener(struct pdr_handle *pdr,
 	if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {
 		pr_err("PDR: %s register listener failed: 0x%x\n",
 		       pds->service_path, resp.resp.error);
-		return ret;
+		return -EREMOTEIO;
 	}
 
 	pds->state = resp.curr_state;