crypto: talitos - Stop leaking memory in error path

free edescriptor when returning error (such as -EAGAIN).

Signed-off-by: Kim Phillips <[e-mail]>
Acked-by: Lee Nipper <[e-mail]>
Signed-off-by: Herbert Xu <[e-mail]>

drivers/crypto/talitos.c

···
 	unsigned int cryptlen = areq->cryptlen;
 	unsigned int authsize = ctx->authsize;
 	unsigned int ivsize;
-	int sg_count;
+	int sg_count, ret;
 
 	/* hmac key */
 	map_single_talitos_ptr(dev, &desc->ptr[0], ctx->authkeylen, &ctx->key,
···
 	map_single_talitos_ptr(dev, &desc->ptr[6], ivsize, ctx->iv, 0,
 			       DMA_FROM_DEVICE);
 
-	return talitos_submit(dev, desc, callback, areq);
+	ret = talitos_submit(dev, desc, callback, areq);
+	if (ret != -EINPROGRESS) {
+		ipsec_esp_unmap(dev, edesc, areq);
+		kfree(edesc);
+	}
+	return ret;
 }