modprobe: return error on timeout

If module cannot be removed in time, return with a failure, not success:

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Link: #377
Signed-off-by: Lucas De Marchi <lucas.de.marchi@gmail.com>

Author: stoeckmann

tools/modprobe.c

@@ -407,6 +407,7 @@ static int rmmod_do_remove_module(struct kmod_module *mod)
 				err = -EAGAIN;
 				break;
 			}
+			err = -EAGAIN;
 		} else {
 			break;
 		}