[PATCH] crypto: caam/qi2 - fix return code in ahash_finup_no_ctx()

[Horia Geantă]

ahash_finup_no_ctx() returns -ENOMEM in most error cases,
and this is fine for almost all of them.

However, the return code provided by dpaa2_caam_enqueue()
(e.g. -EIO or -EBUSY) shouldn't be overridden by -ENOMEM.

Signed-off-by: Horia Geantă <horia.gea...@nxp.com>
---
 drivers/crypto/caam/caamalg_qi2.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/caam/caamalg_qi2.c 
b/drivers/crypto/caam/caamalg_qi2.c
index 1e90412afea2..45e9ff851e2d 100644
--- a/drivers/crypto/caam/caamalg_qi2.c
+++ b/drivers/crypto/caam/caamalg_qi2.c
@@ -4004,7 +4004,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
        int digestsize = crypto_ahash_digestsize(ahash);
        struct ahash_edesc *edesc;
        struct dpaa2_sg_entry *sg_table;
-       int ret;
+       int ret = -ENOMEM;
 
        src_nents = sg_nents_for_len(req->src, req->nbytes);
        if (src_nents < 0) {
@@ -4017,7 +4017,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
                                          DMA_TO_DEVICE);
                if (!mapped_nents) {
                        dev_err(ctx->dev, "unable to DMA map source\n");
-                       return -ENOMEM;
+                       return ret;
                }
        } else {
                mapped_nents = 0;
@@ -4027,7 +4027,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
        edesc = qi_cache_zalloc(GFP_DMA | flags);
        if (!edesc) {
                dma_unmap_sg(ctx->dev, req->src, src_nents, DMA_TO_DEVICE);
-               return -ENOMEM;
+               return ret;
        }
 
        edesc->src_nents = src_nents;
@@ -4044,6 +4044,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
                                          DMA_TO_DEVICE);
        if (dma_mapping_error(ctx->dev, edesc->qm_sg_dma)) {
                dev_err(ctx->dev, "unable to map S/G table\n");
+               ret = -ENOMEM;
                goto unmap;
        }
        edesc->qm_sg_bytes = qm_sg_bytes;
@@ -4054,6 +4055,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
        if (dma_mapping_error(ctx->dev, state->ctx_dma)) {
                dev_err(ctx->dev, "unable to map ctx\n");
                state->ctx_dma = 0;
+               ret = -ENOMEM;
                goto unmap;
        }
 
@@ -4080,7 +4082,7 @@ static int ahash_finup_no_ctx(struct ahash_request *req)
 unmap:
        ahash_unmap_ctx(ctx->dev, edesc, req, DMA_FROM_DEVICE);
        qi_cache_free(edesc);
-       return -ENOMEM;
+       return ret;
 }
 
 static int ahash_update_first(struct ahash_request *req)
-- 
2.17.1