drivers: hv: vmbus: Fix checkpatch LINE_SPACING

Fixed checkpatch warning: Missing a blank line after declarations
checkpatch(LINE_SPACING)

Signed-off-by: Matheus Castello <matheus@castello.eng.br>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20201115195734.8338-4-matheus@castello.eng.br
Signed-off-by: Wei Liu <wei.liu@kernel.org>

drivers/hv/vmbus_drv.c

@@ -156,6 +156,7 @@ static u32 channel_conn_id(struct vmbus_channel *channel,
 {
 	u8 monitor_group = channel_monitor_group(channel);
 	u8 monitor_offset = channel_monitor_offset(channel);
+
 	return monitor_page->parameter[monitor_group][monitor_offset].connectionid.u.id;
 }
 
@@ -550,6 +551,7 @@ static ssize_t vendor_show(struct device *dev,
 			   char *buf)
 {
 	struct hv_device *hv_dev = device_to_hv_device(dev);
+
 	return sprintf(buf, "0x%x\n", hv_dev->vendor_id);
 }
 static DEVICE_ATTR_RO(vendor);
@@ -559,6 +561,7 @@ static ssize_t device_show(struct device *dev,
 			   char *buf)
 {
 	struct hv_device *hv_dev = device_to_hv_device(dev);
+
 	return sprintf(buf, "0x%x\n", hv_dev->device_id);
 }
 static DEVICE_ATTR_RO(device);