[xen staging-4.20] xvmalloc: adjust XVFREE() ordering

[patchbot@xxxxxxx]

commit a99d16079d9bd570a7c6487ed491a1edc4960e49
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Tue May 19 13:38:55 2026 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue May 19 13:38:55 2026 +0200

    xvmalloc: adjust XVFREE() ordering
    
    What c4f427ec879e ("xen: Swap order of actions in the FREE*() macros") did
    should have been done right away when XVFREE() was introduced.
    
    Fixes: 9102fcd9579f ("mm: introduce xvmalloc() et al and use for grant 
table allocations")
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    master commit: 96ffccef5a5f598ffbd263971b92132391f1606a
    master date: 2026-05-06 15:11:11 +0200
---
 xen/include/xen/xvmalloc.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xen/include/xen/xvmalloc.h b/xen/include/xen/xvmalloc.h
index 7686d49f81..e0b8368273 100644
--- a/xen/include/xen/xvmalloc.h
+++ b/xen/include/xen/xvmalloc.h
@@ -61,8 +61,9 @@ void *_xvrealloc(void *va, size_t size, unsigned int align);
 
 /* Free an allocation, and zero the pointer to it. */
 #define XVFREE(p) do { \
-    xvfree(p);         \
+    void *_ptr_ = (p); \
     (p) = NULL;        \
+    xvfree(_ptr_);     \
 } while ( false )
 
 static inline void *_xvmalloc_array(
--
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