watchdog: cpwd: remove memory allocate failure message

Replaced goto with a return statement and dropped the kfree()
calls because memory allocated with devm_kzalloc() is
automatically freed on driver detach

Signed-off-by: Amit Kushwaha <[e-mail]>
Reviewed-by: Guenter Roeck <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>

drivers/watchdog/cpwd.c

···
 	if (cpwd_device)
 		return -EINVAL;
 
-	p = kzalloc(sizeof(*p), GFP_KERNEL);
-	err = -ENOMEM;
-	if (!p) {
-		pr_err("Unable to allocate struct cpwd\n");
-		goto out;
-	}
+	p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL);
+	if (!p)
+		return -ENOMEM;
 
 	p->irq = op->archdata.irqs[0];
 
···
 			     4 * WD_TIMER_REGSZ, DRIVER_NAME);
 	if (!p->regs) {
 		pr_err("Unable to map registers\n");
-		goto out_free;
+		return -ENOMEM;
 	}
 
 	options = of_find_node_by_path("/options");
-	err = -ENODEV;
 	if (!options) {
+		err = -ENODEV;
 		pr_err("Unable to find /options node\n");
 		goto out_iounmap;
 	}
···
 
 	platform_set_drvdata(op, p);
 	cpwd_device = p;
-	err = 0;
-
-out:
-	return err;
+	return 0;
 
 out_unregister:
 	for (i--; i >= 0; i--)
···
 out_iounmap:
 	of_iounmap(&op->resource[0], p->regs, 4 * WD_TIMER_REGSZ);
 
-out_free:
-	kfree(p);
-	goto out;
+	return err;
 }
 
 static int cpwd_remove(struct platform_device *op)
···
 		free_irq(p->irq, p);
 
 	of_iounmap(&op->resource[0], p->regs, 4 * WD_TIMER_REGSZ);
-	kfree(p);
 
 	cpwd_device = NULL;