[glibc/release/2.31/master] x86: Fix incorrect scope of setting `shared_per_thread` [BZ# 30745]

[Noah Goldstein <nwg@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9f27ef8090f26110be9de3514c7ca82c6f270265

commit 9f27ef8090f26110be9de3514c7ca82c6f270265
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date:   Fri Aug 11 18:48:01 2023 -0500

    x86: Fix incorrect scope of setting `shared_per_thread` [BZ# 30745]
    
    The:
    
    ```
        if (shared_per_thread > 0 && threads > 0)
          shared_per_thread /= threads;
    ```
    
    Code was accidentally moved to inside the else scope.  This doesn't
    match how it was previously (before af992e7abd).
    
    This patch fixes that by putting the division after the `else` block.
    
    (cherry picked from commit 084fb31bc2c5f95ae0b9e6df4d3cf0ff43471ede)

Diff:
---
 sysdeps/x86/cacheinfo.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/sysdeps/x86/cacheinfo.c b/sysdeps/x86/cacheinfo.c
index 951c1603d6..17db517830 100644
--- a/sysdeps/x86/cacheinfo.c
+++ b/sysdeps/x86/cacheinfo.c
@@ -679,18 +679,19 @@ init_cacheinfo (void)
 	    }
 	  else
 	    {
-	    intel_bug_no_cache_info:
+intel_bug_no_cache_info:
 	      /* Assume that all logical threads share the highest cache
 		 level.  */
 
-	      threads = ((cpu_features->cpuid[COMMON_CPUID_INDEX_1].ebx >> 16)
-			 & 0xff);
-
-	      /* Cap usage of highest cache level to the number of supported
-		 threads.  */
-	      if (shared_per_thread > 0 && threads > 0)
-		shared_per_thread /= threads;
+	      threads
+		= ((cpu_features->cpuid[COMMON_CPUID_INDEX_1].ebx
+		    >> 16) & 0xff);
 	    }
+
+	  /* Cap usage of highest cache level to the number of supported
+	     threads.  */
+	  if (shared_per_thread > 0 && threads > 0)
+	    shared_per_thread /= threads;
 	}
 
       /* Account for non-inclusive L2 and L3 caches.  */