lkdtm: remove redundant initialization of ret

The variable ret is being initialized with the value -EINVAL however
this value is never read and ret is being re-assigned later on. Hence
the initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/lkdtm/core.c

@@ -387,7 +387,7 @@ static int __init lkdtm_module_init(void)
 {
 	struct crashpoint *crashpoint = NULL;
 	const struct crashtype *crashtype = NULL;
-	int ret = -EINVAL;
+	int ret;
 	int i;
 
 	/* Neither or both of these need to be set */