usb: remove rare pm primitive for conversion to new API

This patch removes a rare use of the USB power management API which
won't be supported after the conversion to the new generic runtime power
management framework. Functionality is not altered.
Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/kaweth.c

@@ -716,7 +716,7 @@ static int kaweth_open(struct net_device *net)
 	return 0;
 
 err_out:
-	usb_autopm_enable(kaweth->intf);
+	usb_autopm_put_interface(kaweth->intf);
 	return -EIO;
 }
 
@@ -753,7 +753,7 @@ static int kaweth_close(struct net_device *net)
 
 	kaweth->status &= ~KAWETH_STATUS_CLOSING;
 
-	usb_autopm_enable(kaweth->intf);
+	usb_autopm_put_interface(kaweth->intf);
 
 	return 0;
 }