[PATCH] hw/hyperv/vmbus: Use QEMU_LOCK_GUARD()

[Evgeny Kolmakov <randomjack94dev@gmail.com>]

Replace manual qemu_mutex_(un)lock() calls with
QEMU_LOCK_GUARD() to remove 'goto out' code

Signed-off-by: Evgeny Kolmakov <randomjack94dev@gmail.com>
---
 hw/hyperv/vmbus.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/hw/hyperv/vmbus.c b/hw/hyperv/vmbus.c
index c5259d1a76..ab99f082d1 100644
--- a/hw/hyperv/vmbus.c
+++ b/hw/hyperv/vmbus.c
@@ -1525,14 +1525,12 @@ static VMBusChannel *find_channel(VMBus *vmbus, uint32_t id)
 static int enqueue_incoming_message(VMBus *vmbus,
                                     const struct hyperv_post_message_input *msg)
 {
-    int ret = 0;
     uint8_t idx, prev_size;
 
-    qemu_mutex_lock(&vmbus->rx_queue_lock);
+    QEMU_LOCK_GUARD(&vmbus->rx_queue_lock);
 
     if (vmbus->rx_queue_size == HV_MSG_QUEUE_LEN) {
-        ret = -ENOBUFS;
-        goto out;
+        return -ENOBUFS;
     }
 
     prev_size = vmbus->rx_queue_size;
@@ -1544,9 +1542,7 @@ static int enqueue_incoming_message(VMBus *vmbus,
     if (!prev_size) {
         vmbus_resched(vmbus);
     }
-out:
-    qemu_mutex_unlock(&vmbus->rx_queue_lock);
-    return ret;
+    return 0;
 }
 
 static uint16_t vmbus_recv_message(const struct hyperv_post_message_input *msg,
@@ -2097,10 +2093,10 @@ static void process_message(VMBus *vmbus)
     void *msgdata;
     uint32_t msglen;
 
-    qemu_mutex_lock(&vmbus->rx_queue_lock);
+    QEMU_LOCK_GUARD(&vmbus->rx_queue_lock);
 
     if (!vmbus->rx_queue_size) {
-        goto unlock;
+        return;
     }
 
     hv_msg = &vmbus->rx_queue[vmbus->rx_queue_head];
@@ -2149,8 +2145,6 @@ out:
     vmbus->rx_queue_head %= HV_MSG_QUEUE_LEN;
 
     vmbus_resched(vmbus);
-unlock:
-    qemu_mutex_unlock(&vmbus->rx_queue_lock);
 }
 
 static const struct {
-- 
2.43.0