[smart] fixup errno passing on sys_mkdir() (#9007)

Use _SYS_WRAP to fetch errno on return of mkdir to avoiding overriding
of it on other system APIs.

Signed-off-by: Shell <smokewood@qq.com>

components/lwp/lwp_syscall.c

@@ -4842,11 +4842,11 @@ sysret_t sys_mkdir(const char *path, mode_t mode)
         return -EINVAL;
     }
 
-    err = mkdir(kpath, mode);
+    err = _SYS_WRAP(mkdir(kpath, mode));
 
     kmem_put(kpath);
 
-    return (err < 0 ? GET_ERRNO() : err);
+    return err;
 #else
     int ret = mkdir(path, mode);
     return (ret < 0 ? GET_ERRNO() : ret);