[PATCH] crypto: stm32 - Handle failure of kmalloc_array()

[Li Qiong]

As the possible failure of the kmalloc_array(), therefore it
should be better to check it and return '-ENOMEM' on error.

Signed-off-by: Li Qiong <liqiong at nfschina.com>
---
 drivers/crypto/stm32/stm32-hash.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index d33006d43f76..fc03e32e364f 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -970,6 +970,8 @@ static int stm32_hash_export(struct ahash_request *req, void *out)
 	rctx->hw_context = kmalloc_array(3 + HASH_CSR_REGISTER_NUMBER,
 					 sizeof(u32),
 					 GFP_KERNEL);
+	if (!rctx->hw_context)
+		return -ENOMEM;
 
 	preg = rctx->hw_context;
 
-- 
2.11.0