pinctrl: imx: Fix NULL dereference in imx_pinctrl_probe()

When converting to ofnode `ofnode_read_u32` was accedentally used to
replace `fdtdec_get_int` instead of `ofnode_read_u32_default`.
Use `ofnode_read_u32_default` to fix this.

Fixes: 59382d2 ("pinctrl: imx: Convert to use livetree API for fdt access")
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
diff --git a/drivers/pinctrl/nxp/pinctrl-imx.c b/drivers/pinctrl/nxp/pinctrl-imx.c
index b1960c5..54cec37 100644
--- a/drivers/pinctrl/nxp/pinctrl-imx.c
+++ b/drivers/pinctrl/nxp/pinctrl-imx.c
@@ -219,7 +219,7 @@
 	if (info->flags & IMX8_USE_SCU)
 		return 0;
 
-	addr = ofnode_get_addr_size_index(dev_ofnode(dev), 0, &size);
+	addr = ofnode_get_addr_size_index(node, 0, &size);
 	if (addr == FDT_ADDR_T_NONE)
 		return -EINVAL;
 
@@ -228,7 +228,7 @@
 		return -ENOMEM;
 	priv->info = info;
 
-	info->mux_mask = ofnode_read_u32(node, "fsl,mux_mask", 0);
+	info->mux_mask = ofnode_read_u32_default(node, "fsl,mux_mask", 0);
 	/*
 	 * Refer to linux documentation for details:
 	 * Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.txt