gpio: stm32_gpio: check GPIO node status after checking DT

The call to fdt_get_status(node) has to be done after the DT is found
to be valid.

Fixes: 1fc2130c

 stm32mp1: update device tree and gpio functions

Change-Id: I70f803aae3dde128a9e740f54c8837b64cb1a244
Signed-off-by: Yann Gautier <yann.gautier@st.com>

drivers/st/gpio/stm32_gpio.c

 /*
- * Copyright (c) 2016-2019, STMicroelectronics - All Rights Reserved
+ * Copyright (c) 2016-2020, STMicroelectronics - All Rights Reserved
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -161,13 +161,14 @@ int dt_set_pinctrl_config(int node)
 	const fdt32_t *cuint;
 	int lenp = 0;
 	uint32_t i;
-	uint8_t status = fdt_get_status(node);
+	uint8_t status;
 	void *fdt;
 
 	if (fdt_get_address(&fdt) == 0) {
 		return -FDT_ERR_NOTFOUND;
 	}
 
+	status = fdt_get_status(node);
 	if (status == DT_DISABLED) {
 		return -FDT_ERR_NOTFOUND;
 	}