usb: otg: ab8500-usb: make probe() work again

The probe() function will always fail because we're testing the wrong
variable.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/otg/ab8500-usb.c

@@ -489,7 +489,7 @@ static int __devinit ab8500_usb_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	otg = kzalloc(sizeof *otg, GFP_KERNEL);
-	if (!ab->phy.otg) {
+	if (!otg) {
 		kfree(ab);
 		return -ENOMEM;
 	}