Commit 
6dd06c9fbe025f542bce4cdb91790c0f91962722 ("module: make
module_address_lookup safe") introduced double returns in the function
kallsyms_lookup(), it's weird.  The second one should be removed.
Signed-off-by: WANG Cong <wangcong@zeuux.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
        /* see if it's in a module */
        return module_address_lookup(addr, symbolsize, offset, modname,
                                     namebuf);
-       return NULL;
 }
 
 int lookup_symbol_name(unsigned long addr, char *symname)