crypto: mxs-dcp - remove set but not used variable 'fini'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/crypto/mxs-dcp.c: In function 'dcp_chan_thread_sha':
drivers/crypto/mxs-dcp.c:707:11: warning:
 variable 'fini' set but not used [-Wunused-but-set-variable]

It's not used since commit d80771c0 ("crypto: mxs-dcp - Fix wait
logic on chan threads"),so can be removed.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/mxs-dcp.c

@@ -700,11 +700,7 @@ static int dcp_chan_thread_sha(void *data)
 
 	struct crypto_async_request *backlog;
 	struct crypto_async_request *arq;
-
-	struct dcp_sha_req_ctx *rctx;
-
-	struct ahash_request *req;
-	int ret, fini;
+	int ret;
 
 	while (!kthread_should_stop()) {
 		set_current_state(TASK_INTERRUPTIBLE);
@@ -725,11 +721,7 @@ static int dcp_chan_thread_sha(void *data)
 			backlog->complete(backlog, -EINPROGRESS);
 
 		if (arq) {
-			req = ahash_request_cast(arq);
-			rctx = ahash_request_ctx(req);
-
 			ret = dcp_sha_req_to_buf(arq);
-			fini = rctx->fini;
 			arq->complete(arq, ret);
 		}
 	}