[Stable-9.0.3 76/82] hw/display/vhost-user-gpu.c: fix vhost_user_gpu_chr_read()

[Michael Tokarev]

From: Haoran Zhang <wh1s...@zju.edu.cn>

fix vhost_user_gpu_chr_read() where `size` was incorrectly passed to 
`msg->flags`.

Fixes: 267f664658 ("hw/display: add vhost-user-vga & gpu-pci")
Signed-off-by: Haoran Zhang <wh1s...@zju.edu.cn>
Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
Reviewed-by: Michael Tokarev <m...@tls.msk.ru>
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>
(cherry picked from commit d6192f3f7593536a4285e8ab6c6cf3f34973ce62)
Signed-off-by: Michael Tokarev <m...@tls.msk.ru>

diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c
index 709c8a02a1..373f04a7b4 100644
--- a/hw/display/vhost-user-gpu.c
+++ b/hw/display/vhost-user-gpu.c
@@ -385,7 +385,7 @@ vhost_user_gpu_chr_read(void *opaque)
     }
 
     msg->request = request;
-    msg->flags = size;
+    msg->flags = flags;
     msg->size = size;
 
     if (request == VHOST_USER_GPU_CURSOR_UPDATE ||
-- 
2.39.5