fib: fix another fib_rules_ops indirect call wrapper problem

It turns out that on commit 41d707b ("fib: fix fib_rules_ops
indirect calls wrappers") I forgot to include the case when
CONFIG_IP_MULTIPLE_TABLES is not set.

Fixes: 41d707b ("fib: fix fib_rules_ops indirect calls wrappers")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Brian Vazquez <brianvv@google.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/fib_rules.c

@@ -17,10 +17,16 @@
 #include <linux/indirect_call_wrapper.h>
 
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES
+#ifdef CONFIG_IP_MULTIPLE_TABLES
 #define INDIRECT_CALL_MT(f, f2, f1, ...) \
 	INDIRECT_CALL_INET(f, f2, f1, __VA_ARGS__)
 #else
+#define INDIRECT_CALL_MT(f, f2, f1, ...) INDIRECT_CALL_1(f, f2, __VA_ARGS__)
+#endif
+#elif CONFIG_IP_MULTIPLE_TABLES
 #define INDIRECT_CALL_MT(f, f2, f1, ...) INDIRECT_CALL_1(f, f1, __VA_ARGS__)
+#else
+#define INDIRECT_CALL_MT(f, f2, f1, ...) f(__VA_ARGS__)
 #endif
 
 static const struct fib_kuid_range fib_kuid_range_unset = {