ARM: OMAP: omap_device: fix return value check in omap_device_build_ss()

In case of error, the function omap_device_alloc() returns ERR_PTR()
and never returns NULL pointer. The NULL test in the return value
check should be replaced with IS_ERR().

dpatch engine is used to auto generated this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/plat-omap/omap_device.c

@@ -671,7 +671,7 @@ struct platform_device __init *omap_device_build_ss(const char *pdev_name, int p
 		dev_set_name(&pdev->dev, "%s", pdev->name);
 
 	od = omap_device_alloc(pdev, ohs, oh_cnt, pm_lats, pm_lats_cnt);
-	if (!od)
+	if (IS_ERR(od))
 		goto odbs_exit1;
 
 	ret = platform_device_add_data(pdev, pdata, pdata_len);