crypto: octeontx2 - add missing check for dma_map_single

Add check for dma_map_single() and return error if it fails in order
to avoid invalid dma address.

Fixes: e9297111 ("crypto: octeontx2 - add ctx_val workaround")
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Bharat Bhushan <bbhushan2@marvell.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/marvell/octeontx2/cn10k_cpt.c

@@ -138,6 +138,10 @@ int cn10k_cpt_hw_ctx_init(struct pci_dev *pdev,
 		return -ENOMEM;
 	cptr_dma = dma_map_single(&pdev->dev, hctx, CN10K_CPT_HW_CTX_SIZE,
 				  DMA_BIDIRECTIONAL);
+	if (dma_mapping_error(&pdev->dev, cptr_dma)) {
+		kfree(hctx);
+		return -ENOMEM;
+	}
 
 	cn10k_cpt_hw_ctx_set(hctx, 1);
 	er_ctx->hw_ctx = hctx;