[PATCH] USB: locking fix for pid.c

you forgot to drop a spinlock before you report an error. A deadlock
will occur.

drivers/usb/input/pid.c

@@ -200,6 +200,7 @@ static int hid_pid_upload_effect(struct input_dev *dev,
 			    break;
 
 		if ( id == FF_EFFECTS_MAX) {
+			spin_unlock_irqrestore(&pid_private->lock,flags);
 // TEMP - We need to get ff_effects_max correctly first:  || id >= dev->ff_effects_max) {
 			dev_dbg(&pid_private->hid->dev->dev, "Not enough device memory\n");
 			return -ENOMEM;