crypto: lrw - fix memleak

LRW module leaks child cipher memory when init_tfm() fails because of child
block size not being 16.

Signed-off-by: Jussi Kivilinna <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

crypto/lrw.c

···
 
 	if (crypto_cipher_blocksize(cipher) != 16) {
 		*flags |= CRYPTO_TFM_RES_BAD_BLOCK_LEN;
+		crypto_free_cipher(cipher);
 		return -EINVAL;
 	}