crypto: sa2ul - Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/sa2ul.c

@@ -2243,25 +2243,21 @@ static int sa_dma_init(struct sa_crypto_data *dd)
 		return ret;
 
 	dd->dma_rx1 = dma_request_chan(dd->dev, "rx1");
-	if (IS_ERR(dd->dma_rx1)) {
-		if (PTR_ERR(dd->dma_rx1) != -EPROBE_DEFER)
-			dev_err(dd->dev, "Unable to request rx1 DMA channel\n");
-		return PTR_ERR(dd->dma_rx1);
-	}
+	if (IS_ERR(dd->dma_rx1))
+		return dev_err_probe(dd->dev, PTR_ERR(dd->dma_rx1),
+				     "Unable to request rx1 DMA channel\n");
 
 	dd->dma_rx2 = dma_request_chan(dd->dev, "rx2");
 	if (IS_ERR(dd->dma_rx2)) {
 		dma_release_channel(dd->dma_rx1);
-		if (PTR_ERR(dd->dma_rx2) != -EPROBE_DEFER)
-			dev_err(dd->dev, "Unable to request rx2 DMA channel\n");
-		return PTR_ERR(dd->dma_rx2);
+		return dev_err_probe(dd->dev, PTR_ERR(dd->dma_rx2),
+				     "Unable to request rx2 DMA channel\n");
 	}
 
 	dd->dma_tx = dma_request_chan(dd->dev, "tx");
 	if (IS_ERR(dd->dma_tx)) {
-		if (PTR_ERR(dd->dma_tx) != -EPROBE_DEFER)
-			dev_err(dd->dev, "Unable to request tx DMA channel\n");
-		ret = PTR_ERR(dd->dma_tx);
+		ret = dev_err_probe(dd->dev, PTR_ERR(dd->dma_tx),
+				    "Unable to request tx DMA channel\n");
 		goto err_dma_tx;
 	}