staging: rtl8188eu: unnecessary branching removed

If the 'remain' is zero, the loop is not executed at all.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/hal/fw.c

@@ -72,12 +72,10 @@ static void _rtl88e_fw_block_write(struct adapter *adapt,
 		offset += blk_sz;
 	}
 
-	if (remain) {
 	buf_ptr += blk_cnt * blk_sz;
 	for (i = 0; i < remain; i++) {
 		usb_write8(adapt, offset + i, buf_ptr[i]);
 	}
-	}
 }
 
 static void _rtl88e_fill_dummy(u8 *pfwbuf, u32 *pfwlen)