Drivers: hv: use kmalloc_array() instead of kmalloc()

Replace kmalloc() with kmalloc_array() to prevent potential
overflow, as recommended in Documentation/process/deprecated.rst.

Signed-off-by: Gongwei Li <ligongwei@kylinos.cn>
Signed-off-by: Wei Liu <wei.liu@kernel.org>

Author: ligongwei-qm

drivers/hv/hv_util.c

@@ -586,7 +586,7 @@ static int util_probe(struct hv_device *dev,
 		(struct hv_util_service *)dev_id->driver_data;
 	int ret;
 
-	srv->recv_buffer = kmalloc(HV_HYP_PAGE_SIZE * 4, GFP_KERNEL);
+	srv->recv_buffer = kmalloc_array(4, HV_HYP_PAGE_SIZE, GFP_KERNEL);
 	if (!srv->recv_buffer)
 		return -ENOMEM;
 	srv->channel = dev->channel;