staging: vme: fix loop condition

Fix loop condition in vme_register_bridge that results in an infinite
loop in the event that device_register fails.

Signed-off-by: Manohar Vanga <manohar.vanga@cern.ch>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Acked-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/vme/vme.c

@@ -1364,7 +1364,7 @@ int vme_register_bridge(struct vme_bridge *bridge)
 	return retval;
 
 err_reg:
-	while (i > -1) {
+	while (--i >= 0) {
 		dev = &bridge->dev[i];
 		device_unregister(dev);
 	}