clk: imx: imx8: Fix an error handling path if devm_clk_hw_register_mux_parent_data_table() fails

If a devm_clk_hw_register_mux_parent_data_table() call fails, it is likely
that the probe should fail with an error code.

Set 'ret' before leaving the function.

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

@@ -373,6 +373,7 @@ static int imx8_acm_clk_probe(struct platform_device *pdev)
 										sels[i].shift, sels[i].width,
 										0, NULL, NULL);
 		if (IS_ERR(hws[sels[i].clkid])) {
+			ret = PTR_ERR(hws[sels[i].clkid]);
 			pm_runtime_disable(&pdev->dev);
 			goto err_clk_register;
 		}