usb: core: urb: don't print on ENOMEM

All kmalloc-based functions print enough information on failures.
Signed-off-by: Wolfram Sang <wsa-dev@sang-engineering.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/core/urb.c

@@ -68,10 +68,8 @@ struct urb *usb_alloc_urb(int iso_packets, gfp_t mem_flags)
 	urb = kmalloc(sizeof(struct urb) +
 		iso_packets * sizeof(struct usb_iso_packet_descriptor),
 		mem_flags);
-	if (!urb) {
-		printk(KERN_ERR "alloc_urb: kmalloc failed\n");
+	if (!urb)
 		return NULL;
-	}
 	usb_init_urb(urb);
 	return urb;
 }