s5p sdhci: call pinmux for card's gpio pins before use them

The SD card detection depends on checking one pin state.
But the pin was configured after card was detected, which is wrong.

This commit fixes this, by moving call to pinmux before use the pin.

Tested-on: Odroid U3 and Odroid X2.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Guillaume GARDET <guillaume.gardet@free.fr>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

drivers/mmc/s5p_sdhci.c

@@ -106,6 +106,12 @@ static int do_sdhci_init(struct sdhci_host *host)
 	flag = host->bus_width == 8 ? PINMUX_FLAG_8BIT_MODE : PINMUX_FLAG_NONE;
 	dev_id = host->index + PERIPH_ID_SDMMC0;
 
+	ret = exynos_pinmux_config(dev_id, flag);
+	if (ret) {
+		printf("external SD not configured\n");
+		return ret;
+	}
+
 	if (dm_gpio_is_valid(&host->pwr_gpio)) {
 		dm_gpio_set_value(&host->pwr_gpio, 1);
 		ret = exynos_pinmux_config(dev_id, flag);
@@ -121,12 +127,6 @@ static int do_sdhci_init(struct sdhci_host *host)
 			debug("no SD card detected (%d)\n", ret);
 			return -ENODEV;
 		}
-
-		ret = exynos_pinmux_config(dev_id, flag);
-		if (ret) {
-			printf("external SD not configured\n");
-			return ret;
-		}
 	}
 
 	return s5p_sdhci_core_init(host);
@@ -193,7 +193,7 @@ static int process_nodes(const void *blob, int node_list[], int count)
 		}
 
 		ret = do_sdhci_init(host);
-		if (ret) {
+		if (ret && ret != -ENODEV) {
 			printf("%s: failed to initialize dev %d (%d)\n", __func__, i, ret);
 			failed++;
 		}