[PATCH] xfs_io: fix memory leak in add_enckey

[Eric Sandeen <sandeen@xxxxxxxxxx>]

Invalid arguments to add_enckey will leak the "arg" allocation,
so fix that.

Fixes: ba71de04 ("xfs_io/encrypt: add 'add_enckey' command")
Fixes-coverity-id: 1454644
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---

diff --git a/io/encrypt.c b/io/encrypt.c
index 17d61cfb..c6a4e190 100644
--- a/io/encrypt.c
+++ b/io/encrypt.c
@@ -696,6 +696,7 @@ add_enckey_f(int argc, char **argv)
 				goto out;
 			break;
 		default:
+			free(arg);
 			return command_usage(&add_enckey_cmd);
 		}
 	}