mtd: spear_smi: release memory region during remove

Driver must cleanup all held resources during remove. It wasn't
releasing requested memory region.
Signed-off-by: NShiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NStefan Roese <sr@denx.de>
Signed-off-by: NArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/devices/spear_smi.c

@@ -1024,6 +1024,7 @@ static int __devexit spear_smi_remove(struct platform_device *pdev)
 {
 	struct spear_smi *dev;
 	struct spear_snor_flash *flash;
+	struct resource *smi_base;
 	int ret;
 	int i, irq;
 
@@ -1055,6 +1056,9 @@ static int __devexit spear_smi_remove(struct platform_device *pdev)
 	clk_put(dev->clk);
 	iounmap(dev->io_base);
 	kfree(dev);
+
+	smi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(smi_base->start, resource_size(smi_base));
 	platform_set_drvdata(pdev, NULL);
 
 	return 0;