soc: qcom: pmic_glink: Handle the return value of pmic_glink_init

As platform_driver_register() and register_rpmsg_driver() can return
error numbers, it should be better to check the return value and deal
with the exception.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Fixes: 58ef4ece ("soc: qcom: pmic_glink: Introduce base PMIC GLINK  driver")
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Link: https://lore.kernel.org/r/20240510083156.1996783-1-nichen@iscas.ac.cnSigned-off-by: Bjorn Andersson <andersson@kernel.org>

drivers/soc/qcom/pmic_glink.c

@@ -369,8 +369,17 @@ static struct platform_driver pmic_glink_driver = {
 
 static int pmic_glink_init(void)
 {
-	platform_driver_register(&pmic_glink_driver);
-	register_rpmsg_driver(&pmic_glink_rpmsg_driver);
+	int ret;
+
+	ret = platform_driver_register(&pmic_glink_driver);
+	if (ret < 0)
+		return ret;
+
+	ret = register_rpmsg_driver(&pmic_glink_rpmsg_driver);
+	if (ret < 0) {
+		platform_driver_unregister(&pmic_glink_driver);
+		return ret;
+	}
 
 	return 0;
 }