interconnect: qcom: rpmh: fix probe child-node error handling

Make sure to clean up and release resources properly also in case probe
fails when populating child devices.

Fixes: 57eb1477 ("interconnect: qcom: icc-rpmh: Support child NoC device probe")
Cc: stable@vger.kernel.org      # 6.0
Cc: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: NKonrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: NJohan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230306075651.2449-10-johan+linaro@kernel.orgSigned-off-by: NGeorgi Djakov <djakov@kernel.org>

drivers/interconnect/qcom/icc-rpmh.c

@@ -235,8 +235,11 @@ int qcom_icc_rpmh_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, qp);
 
 	/* Populate child NoC devices if any */
-	if (of_get_child_count(dev->of_node) > 0)
-		return of_platform_populate(dev->of_node, NULL, NULL, dev);
+	if (of_get_child_count(dev->of_node) > 0) {
+		ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
+		if (ret)
+			goto err;
+	}
 
 	return 0;
 err: