pinctrl: imx: remove an unnecessary NULL check

The address of "ipctl->pin_regs[pin_id]" can't be NULL.  It's the offset
into an array in the middle of a struct.  This patch removes the check.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index 188001b..d2d4b8f 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -449,7 +449,7 @@ static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
 		}
 	} else {
 		pin_reg = &ipctl->pin_regs[pin_id];
-		if (!pin_reg || pin_reg->conf_reg == -1) {
+		if (pin_reg->conf_reg == -1) {
 			seq_puts(s, "N/A");
 			return;
 		}