vfio-user: simplify vfio_user_process()

It can figure out if it's a reply by itself, rather than passing that
information in.

Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Link: https://lore.kernel.org/qemu-devel/20251203100316.3604456-2-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

hw/vfio-user/proxy.c

@@ -147,8 +147,7 @@ VFIOUserFDs *vfio_user_getfds(int numfds)
 /*
  * Process a received message.
  */
-static void vfio_user_process(VFIOUserProxy *proxy, VFIOUserMsg *msg,
-                              bool isreply)
+static void vfio_user_process(VFIOUserProxy *proxy, VFIOUserMsg *msg)
 {
 
     /*
@@ -157,7 +156,7 @@ static void vfio_user_process(VFIOUserProxy *proxy, VFIOUserMsg *msg,
      *
      * Requests get queued for the BH.
      */
-    if (isreply) {
+    if ((msg->hdr->flags & VFIO_USER_TYPE) == VFIO_USER_REPLY) {
         msg->complete = true;
         if (msg->type == VFIO_MSG_WAIT) {
             qemu_cond_signal(&msg->cv);
@@ -187,7 +186,6 @@ static int vfio_user_complete(VFIOUserProxy *proxy, Error **errp)
 {
     VFIOUserMsg *msg = proxy->part_recv;
     size_t msgleft = proxy->recv_left;
-    bool isreply;
     char *data;
     int ret;
 
@@ -214,8 +212,7 @@ static int vfio_user_complete(VFIOUserProxy *proxy, Error **errp)
      */
     proxy->part_recv = NULL;
     proxy->recv_left = 0;
-    isreply = (msg->hdr->flags & VFIO_USER_TYPE) == VFIO_USER_REPLY;
-    vfio_user_process(proxy, msg, isreply);
+    vfio_user_process(proxy, msg);
 
     /* return positive value */
     return 1;
@@ -381,7 +378,7 @@ static int vfio_user_recv_one(VFIOUserProxy *proxy, Error **errp)
         data += ret;
     }
 
-    vfio_user_process(proxy, msg, isreply);
+    vfio_user_process(proxy, msg);
     return 0;
 
     /*