crypto: ccp - Fix return value check in ccp_dmaengine_register()

Fix the retrn value check which testing the wrong variable
in ccp_dmaengine_register().

Fixes: 58ea8abf49 ("crypto: ccp - Register the CCP as a DMA resource")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ccp/ccp-dmaengine.c

@@ -648,7 +648,7 @@ int ccp_dmaengine_register(struct ccp_device *ccp)
 	dma_desc_cache_name = devm_kasprintf(ccp->dev, GFP_KERNEL,
 					     "%s-dmaengine-desc-cache",
 					     ccp->name);
-	if (!dma_cmd_cache_name) {
+	if (!dma_desc_cache_name) {
 		ret = -ENOMEM;
 		goto err_cache;
 	}