pinctrl: stmfx: Fix 'warn: unsigned <VAR> is never less than zero'

smatch warnings:
drivers/pinctrl/pinctrl-stmfx.c:225 stmfx_pinconf_get() warn: unsigned 'dir' is never less than zero.
drivers/pinctrl/pinctrl-stmfx.c:228 stmfx_pinconf_get() warn: unsigned 'type' is never less than zero.
drivers/pinctrl/pinctrl-stmfx.c:231 stmfx_pinconf_get() warn: unsigned 'pupd' is never less than zero.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/pinctrl/pinctrl-stmfx.c

@@ -213,9 +213,8 @@ static int stmfx_pinconf_get(struct pinctrl_dev *pctldev,
 	struct stmfx_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
 	u32 param = pinconf_to_config_param(*config);
 	struct pinctrl_gpio_range *range;
-	u32 dir, type, pupd;
 	u32 arg = 0;
-	int ret;
+	int ret, dir, type, pupd;
 
 	range = pinctrl_find_gpio_range_from_pin_nolock(pctldev, pin);
 	if (!range)