fs/setfd: correct the return value

Change-Id: I766f3760e7167a579b73673c44b70847ee06850b
Signed-off-by: chao.an <anchao@xiaomi.com>

fs/vfs/fs_fcntl.c

@@ -143,6 +143,8 @@ int file_vfcntl(FAR struct file *filep, int cmd, va_list ap)
             {
               filep->f_oflags &= ~O_CLOEXEC;
             }
+
+          ret = OK;
         }
         break;
 

net/socket/net_vfcntl.c

@@ -146,6 +146,8 @@ int psock_vfcntl(FAR struct socket *psock, int cmd, va_list ap)
             {
               psock->s_flags &= ~_SF_CLOEXEC;
             }
+
+          ret = OK;
          }
          break;