crypto: bcm - Use request_complete helpers

Use the request_complete helpers instead of calling the completion
function directly.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/bcm/cipher.c

@@ -1614,7 +1614,7 @@ static void finish_req(struct iproc_reqctx_s *rctx, int err)
 	spu_chunk_cleanup(rctx);
 
 	if (areq)
-		areq->complete(areq, err);
+		crypto_request_complete(areq, err);
 }
 
 /**