usb: misc: trancevibrator: don't print on ENOMEM

All kmalloc-based functions print enough information on failures.

Signed-off-by: Wolfram Sang <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/misc/trancevibrator.c

···
 	int retval;
 
 	dev = kzalloc(sizeof(struct trancevibrator), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!dev) {
 		retval = -ENOMEM;
 		goto error;
 	}