[xen stable-4.16] libs/light: Propagate libxl__arch_domain_create() return code

[patchbot@xxxxxxx]

commit 4320b31106efe4cf78867e1da379f7534e1c5c34
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Mon Nov 28 11:46:53 2022 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Nov 28 11:46:53 2022 +0100

    libs/light: Propagate libxl__arch_domain_create() return code
    
    Commit 34990446ca91 started to overwrite the `rc` value from
    libxl__arch_domain_create(), thus error aren't propagated anymore.
    
    Check `rc` value before doing the next thing.
    
    Fixes: 34990446ca91 ("libxl: don't ignore the return value from 
xc_cpuid_apply_policy")
    Reported-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Reviewed-by: Jason Andryuk <jandryuk@xxxxxxxxx>
    master commit: 8cdfbf95b19c01fbb741c41d5ea5a94f8823964c
    master date: 2022-11-21 12:23:01 +0100
---
 tools/libs/light/libxl_dom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/libs/light/libxl_dom.c b/tools/libs/light/libxl_dom.c
index fe9f760f71..73fccd9243 100644
--- a/tools/libs/light/libxl_dom.c
+++ b/tools/libs/light/libxl_dom.c
@@ -379,6 +379,7 @@ int libxl__build_pre(libxl__gc *gc, uint32_t domid,
     state->console_port = xc_evtchn_alloc_unbound(ctx->xch, domid, 
state->console_domid);
 
     rc = libxl__arch_domain_create(gc, d_config, state, domid);
+    if (rc) goto out;
 
     /* Construct a CPUID policy, but only for brand new domains.  Domains
      * being migrated-in/restored have CPUID handled during the
@@ -386,6 +387,7 @@ int libxl__build_pre(libxl__gc *gc, uint32_t domid,
     if (!state->restore)
         rc = libxl__cpuid_legacy(ctx, domid, false, info);
 
+out:
     return rc;
 }
 
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.16