mmc: sdhci-cadence: Fix an error handling path in sdhci_cdns_probe()

If devm_reset_control_get_optional_exclusive() fails, some resources still
need to be released. So branch to the error handling path instead of
returning directly.

Fixes: aad53d4e ("mmc: sdhci-cadence: Support mmc hardware reset")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Brad Larson <blarson@amd.com>
Link: https://lore.kernel.org/r/f61599a9ef23767c2d66e5af9c975f05ef1cec6b.1682430069.git.christophe.jaillet@wanadoo.frSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-cadence.c

@@ -540,9 +540,11 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
 
 	if (host->mmc->caps & MMC_CAP_HW_RESET) {
 		priv->rst_hw = devm_reset_control_get_optional_exclusive(dev, NULL);
-		if (IS_ERR(priv->rst_hw))
-			return dev_err_probe(mmc_dev(host->mmc), PTR_ERR(priv->rst_hw),
-					     "reset controller error\n");
+		if (IS_ERR(priv->rst_hw)) {
+			ret = dev_err_probe(mmc_dev(host->mmc), PTR_ERR(priv->rst_hw),
+					    "reset controller error\n");
+			goto free;
+		}
 		if (priv->rst_hw)
 			host->mmc_host_ops.card_hw_reset = sdhci_cdns_mmc_hw_reset;
 	}