nvme-apple: stop casting function pointer signatures

Casting function pointers breaks control flow enforcement and is
generally a horrible coding style.

Add two wrappers to get rid of these casts.

Signed-off-by: Christoph Hellwig <[e-mail]>
Reviewed-by: Chaitanya Kulkarni <[e-mail]>
Reviewed-by: Sven Peter <[e-mail]>
Signed-off-by: Jens Axboe <[e-mail]>

drivers/nvme/host/apple.c

···
 	nvme_put_ctrl(&anv->ctrl);
 }
 
+static void devm_apple_nvme_put_tag_set(void *data)
+{
+	blk_mq_free_tag_set(data);
+}
+
 static int apple_nvme_alloc_tagsets(struct apple_nvme *anv)
 {
 	int ret;
···
 	ret = blk_mq_alloc_tag_set(&anv->admin_tagset);
 	if (ret)
 		return ret;
-	ret = devm_add_action_or_reset(anv->dev,
-				       (void (*)(void *))blk_mq_free_tag_set,
+	ret = devm_add_action_or_reset(anv->dev, devm_apple_nvme_put_tag_set,
 				       &anv->admin_tagset);
 	if (ret)
 		return ret;
···
 	ret = blk_mq_alloc_tag_set(&anv->tagset);
 	if (ret)
 		return ret;
-	ret = devm_add_action_or_reset(
-		anv->dev, (void (*)(void *))blk_mq_free_tag_set, &anv->tagset);
+	ret = devm_add_action_or_reset(anv->dev, devm_apple_nvme_put_tag_set,
+					&anv->tagset);
 	if (ret)
 		return ret;
 
···
 	return 0;
 }
 
+static void devm_apple_nvme_mempool_destroy(void *data)
+{
+	mempool_destroy(data);
+}
+
 static int apple_nvme_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
···
 		ret = -ENOMEM;
 		goto put_dev;
 	}
-	ret = devm_add_action_or_reset(
-		anv->dev, (void (*)(void *))mempool_destroy, anv->iod_mempool);
+	ret = devm_add_action_or_reset(anv->dev,
+			devm_apple_nvme_mempool_destroy, anv->iod_mempool);
 	if (ret)
 		goto put_dev;