uru4000: Fix memory leak on error in dev_init()

libfprint/drivers/uru4000.c:1357:3: warning: Potential leak of memory pointed to by 'urudev'
                fp_err("could not get encryption slot");
                ^~~~~~

libfprint/drivers/uru4000.c

@@ -1348,6 +1348,8 @@ static int dev_init(struct fp_img_dev *dev, unsigned long driver_data)
 	}
 
 	urudev = g_malloc0(sizeof(*urudev));
+	fp_dev_set_instance_data(FP_DEV(dev), urudev);
+
 	urudev->profile = &uru4k_dev_info[driver_data];
 	urudev->interface = iface_desc->bInterfaceNumber;
 
@@ -1374,7 +1376,6 @@ static int dev_init(struct fp_img_dev *dev, unsigned long driver_data)
 	}
 	urudev->param = PK11_ParamFromIV(urudev->cipher, NULL);
 
-	fp_dev_set_instance_data(FP_DEV(dev), urudev);
 	fpi_imgdev_open_complete(dev, 0);
 
 out: