clk: imx: imx8: Fix an error handling path in clk_imx_acm_attach_pm_domains()

If a dev_pm_domain_attach_by_id() call fails, previously allocated
resources need to be released.

Fixes: d3a0946 ("clk: imx: imx8: add audio clock mux driver")
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>

Author: tititiou36

drivers/clk/imx/clk-imx8-acm.c

@@ -279,8 +279,10 @@ static int clk_imx_acm_attach_pm_domains(struct device *dev,
 
 	for (i = 0; i < dev_pm->num_domains; i++) {
 		dev_pm->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
-		if (IS_ERR(dev_pm->pd_dev[i]))
-			return PTR_ERR(dev_pm->pd_dev[i]);
+		if (IS_ERR(dev_pm->pd_dev[i])) {
+			ret = PTR_ERR(dev_pm->pd_dev[i]);
+			goto detach_pm;
+		}
 
 		dev_pm->pd_dev_link[i] = device_link_add(dev,
 							 dev_pm->pd_dev[i],