crypto: sahara - use dev_err_probe()

Switch to use dev_err_probe() to simplify the error paths and unify
message template. While at it, also remove explicit error messages
from every potential -ENOMEM.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Author: opanait-wr

drivers/crypto/sahara.c

@@ -1346,10 +1346,9 @@ static int sahara_probe(struct platform_device *pdev)
 
 	err = devm_request_irq(&pdev->dev, irq, sahara_irq_handler,
 			       0, dev_name(&pdev->dev), dev);
-	if (err) {
-		dev_err(&pdev->dev, "failed to request irq\n");
-		return err;
-	}
+	if (err)
+		return dev_err_probe(&pdev->dev, err,
+				     "failed to request irq\n");
 
 	/* clocks */
 	dev->clk_ipg = devm_clk_get_enabled(&pdev->dev, "ipg");
@@ -1366,41 +1365,33 @@ static int sahara_probe(struct platform_device *pdev)
 	dev->hw_desc[0] = dmam_alloc_coherent(&pdev->dev,
 			SAHARA_MAX_HW_DESC * sizeof(struct sahara_hw_desc),
 			&dev->hw_phys_desc[0], GFP_KERNEL);
-	if (!dev->hw_desc[0]) {
-		dev_err(&pdev->dev, "Could not allocate hw descriptors\n");
+	if (!dev->hw_desc[0])
 		return -ENOMEM;
-	}
 	dev->hw_desc[1] = dev->hw_desc[0] + 1;
 	dev->hw_phys_desc[1] = dev->hw_phys_desc[0] +
 				sizeof(struct sahara_hw_desc);
 
 	/* Allocate space for iv and key */
 	dev->key_base = dmam_alloc_coherent(&pdev->dev, 2 * AES_KEYSIZE_128,
 				&dev->key_phys_base, GFP_KERNEL);
-	if (!dev->key_base) {
-		dev_err(&pdev->dev, "Could not allocate memory for key\n");
+	if (!dev->key_base)
 		return -ENOMEM;
-	}
 	dev->iv_base = dev->key_base + AES_KEYSIZE_128;
 	dev->iv_phys_base = dev->key_phys_base + AES_KEYSIZE_128;
 
 	/* Allocate space for context: largest digest + message length field */
 	dev->context_base = dmam_alloc_coherent(&pdev->dev,
 					SHA256_DIGEST_SIZE + 4,
 					&dev->context_phys_base, GFP_KERNEL);
-	if (!dev->context_base) {
-		dev_err(&pdev->dev, "Could not allocate memory for MDHA context\n");
+	if (!dev->context_base)
 		return -ENOMEM;
-	}
 
 	/* Allocate space for HW links */
 	dev->hw_link[0] = dmam_alloc_coherent(&pdev->dev,
 			SAHARA_MAX_HW_LINK * sizeof(struct sahara_hw_link),
 			&dev->hw_phys_link[0], GFP_KERNEL);
-	if (!dev->hw_link[0]) {
-		dev_err(&pdev->dev, "Could not allocate hw links\n");
+	if (!dev->hw_link[0])
 		return -ENOMEM;
-	}
 	for (i = 1; i < SAHARA_MAX_HW_LINK; i++) {
 		dev->hw_phys_link[i] = dev->hw_phys_link[i - 1] +
 					sizeof(struct sahara_hw_link);
@@ -1431,8 +1422,8 @@ static int sahara_probe(struct platform_device *pdev)
 		version = (version >> 8) & 0xff;
 	}
 	if (err == -ENODEV) {
-		dev_err(&pdev->dev, "SAHARA version %d not supported\n",
-				version);
+		dev_err_probe(&pdev->dev, err,
+			      "SAHARA version %d not supported\n", version);
 		goto err_algs;
 	}