[PATCH] pinctrl: rzn1: Fix check for used MDIO bus

[Phil Edworthy]

This fixes the check for unused mdio bus setting and the following static
checker warning:
 drivers/pinctrl/pinctrl-rzn1.c:198 rzn1_pinctrl_mdio_select()
 warn: always true condition '(ipctl->mdio_func[mdio] >= 0) => (0-u32max >= 0)'

It also fixes the return var when calling of_get_child_count()

Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Phil Edworthy <phil.edwor...@renesas.com>
---
v2:
 - Don't rely on rely on the implicit typecast from -1 to uint
---
 drivers/pinctrl/pinctrl-rzn1.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rzn1.c b/drivers/pinctrl/pinctrl-rzn1.c
index 57886dcff53d..cc0e5aa9128a 100644
--- a/drivers/pinctrl/pinctrl-rzn1.c
+++ b/drivers/pinctrl/pinctrl-rzn1.c
@@ -112,7 +112,7 @@ struct rzn1_pinctrl {
        struct rzn1_pinctrl_regs __iomem *lev2;
        u32 lev1_protect_phys;
        u32 lev2_protect_phys;
-       u32 mdio_func[2];
+       int mdio_func[2];
 
        struct rzn1_pin_group *groups;
        unsigned int ngroups;
@@ -810,8 +810,8 @@ static int rzn1_pinctrl_probe_dt(struct platform_device 
*pdev,
        struct device_node *np = pdev->dev.of_node;
        struct device_node *child;
        unsigned int maxgroups = 0;
-       unsigned int nfuncs = 0;
        unsigned int i = 0;
+       int nfuncs = 0;
        int ret;
 
        nfuncs = of_get_child_count(np);
-- 
2.17.1