mmc: mmci: fix error return code in mmci_probe()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: f9bb304 ("mmc: mmci: Add support for setting pad type via pinctrl")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/mmci.c

@@ -1646,20 +1646,23 @@ static int mmci_probe(struct amba_device *dev,
 		host->pinctrl = devm_pinctrl_get(&dev->dev);
 		if (IS_ERR(host->pinctrl)) {
 			dev_err(&dev->dev, "failed to get pinctrl");
+			ret = PTR_ERR(host->pinctrl);
 			goto host_free;
 		}
 
 		host->pins_default = pinctrl_lookup_state(host->pinctrl,
 							  PINCTRL_STATE_DEFAULT);
 		if (IS_ERR(host->pins_default)) {
 			dev_err(mmc_dev(mmc), "Can't select default pins\n");
+			ret = PTR_ERR(host->pins_default);
 			goto host_free;
 		}
 
 		host->pins_opendrain = pinctrl_lookup_state(host->pinctrl,
 							    MMCI_PINCTRL_STATE_OPENDRAIN);
 		if (IS_ERR(host->pins_opendrain)) {
 			dev_err(mmc_dev(mmc), "Can't select opendrain pins\n");
+			ret = PTR_ERR(host->pins_opendrain);
 			goto host_free;
 		}
 	}