diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c
index 7eb5c40c069fafb296b436c99241b721be33895f..e083e1f4a6f46d784f6aa4a1e354dea58b16eab1 100644
--- a/arch/powerpc/platforms/85xx/p1022_ds.c
+++ b/arch/powerpc/platforms/85xx/p1022_ds.c
@@ -129,6 +129,7 @@ static void p1022ds_set_gamma_table(int monitor_port, char *gamma_table_base)
 static void p1022ds_set_monitor_port(int monitor_port)
 {
 	struct device_node *pixis_node;
+	void __iomem *pixis;
 	u8 __iomem *brdcfg1;
 
 	pixis_node = of_find_compatible_node(NULL, NULL, "fsl,p1022ds-pixis");
@@ -137,12 +138,12 @@ static void p1022ds_set_monitor_port(int monitor_port)
 		return;
 	}
 
-	brdcfg1 = of_iomap(pixis_node, 0);
-	if (!brdcfg1) {
+	pixis = of_iomap(pixis_node, 0);
+	if (!pixis) {
 		pr_err("p1022ds: could not map ngPIXIS registers\n");
 		return;
 	}
-	brdcfg1 += 9;	/* BRDCFG1 is at offset 9 in the ngPIXIS */
+	brdcfg1 = pixis + 9;	/* BRDCFG1 is at offset 9 in the ngPIXIS */
 
 	switch (monitor_port) {
 	case 0: /* DVI */
@@ -158,6 +159,8 @@ static void p1022ds_set_monitor_port(int monitor_port)
 	default:
 		pr_err("p1022ds: unsupported monitor port %i\n", monitor_port);
 	}
+
+	iounmap(pixis);
 }
 
 /**
@@ -201,6 +204,8 @@ void p1022ds_set_pixel_clock(unsigned int pixclock)
 
 	/* Enable the clock and set the pxclk */
 	setbits32(&guts->clkdvdr, CLKDVDR_PXCKEN | (pxclk << 16));
+
+	iounmap(guts);
 }
 
 /**