MDEV-14567: CRYPTO_set_mem_functions fails in FIPS mode

If the CRYPTO_set_mem_functions fails just return success
from check_openssl_compatibility. The only case where
CRYPTO_set_mem_functions fails is the allow_customize==0 (aka FIPS
mode). The check_openssl_compatibility isn't able to complete unless
this function returns success.

ref: https://github.com/openssl/openssl/blob/OpenSSL_1_1_0g/crypto/mem.c#L34

mysys_ssl/openssl.c

@@ -51,7 +51,7 @@ int check_openssl_compatibility()
   EVP_MD_CTX     *md5_ctx;
 
   if (!CRYPTO_set_mem_functions(coc_malloc, NULL, NULL))
-    return 1;
+    return 0;
 
   testing= 1;
   alloc_size= alloc_count= 0;