module: print sensible error code

Printing "err 0" to the user in the warning message is not particularly
useful, especially when this gets transformed into a -ENOENT for the
remainder of the call chain.
Signed-off-by: NJason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: NJessica Yu <jeyu@kernel.org>

kernel/module.c

@@ -2284,9 +2284,9 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
 			if (!ksym && ELF_ST_BIND(sym[i].st_info) == STB_WEAK)
 				break;
 
-			pr_warn("%s: Unknown symbol %s (err %li)\n",
-				mod->name, name, PTR_ERR(ksym));
 			ret = PTR_ERR(ksym) ?: -ENOENT;
+			pr_warn("%s: Unknown symbol %s (err %d)\n",
+				mod->name, name, ret);
 			break;
 
 		default: