[PATCH crypto] crypto: caam - add missing key_dma unmap

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(struct caam_ctx) ctx->key_dma needs to be unmapped
when context is cleaned up.

Signed-off-by: Horia Geanta <horia.geanta@xxxxxxxxxxxxx>
---
 drivers/crypto/caam/caamalg.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index b71f2fd749df..f44cfe065eb3 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -2099,6 +2099,11 @@ static void caam_cra_exit(struct crypto_tfm *tfm)
 		dma_unmap_single(ctx->jrdev, ctx->sh_desc_givenc_dma,
 				 desc_bytes(ctx->sh_desc_givenc),
 				 DMA_TO_DEVICE);
+	if (ctx->key_dma &&
+	    !dma_mapping_error(ctx->jrdev, ctx->key_dma))
+		dma_unmap_single(ctx->jrdev, ctx->key_dma,
+				 ctx->enckeylen + ctx->split_key_pad_len,
+				 DMA_TO_DEVICE);
 
 	caam_jr_free(ctx->jrdev);
 }
-- 
1.8.3.1


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