[PATCH -next] crypto: fix missing unlock on error in safexcel_ahash_send_req()

[Wei Yongjun]

Add the missing unlock before return from function
safexcel_ahash_send_req() in the error handling case.

Fixes: cff9a17545a3 ("crypto: inside-secure - move cache result dma mapping to 
request")
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/crypto/inside-secure/safexcel_hash.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/inside-secure/safexcel_hash.c 
b/drivers/crypto/inside-secure/safexcel_hash.c
index 77268c9..6e9eb9b 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -236,8 +236,10 @@ static int safexcel_ahash_send_req(struct 
crypto_async_request *async, int ring,
        if (cache_len) {
                req->cache_dma = dma_map_single(priv->dev, req->cache,
                                                cache_len, DMA_TO_DEVICE);
-               if (dma_mapping_error(priv->dev, req->cache_dma))
+               if (dma_mapping_error(priv->dev, req->cache_dma)) {
+                       spin_unlock_bh(&priv->ring[ring].egress_lock);
                        return -EINVAL;
+               }
 
                req->cache_sz = cache_len;
                first_cdesc = safexcel_add_cdesc(priv, ring, 1,