r8169: remove not needed check in rtl_fw_write_firmware

This check can never be true for a firmware file with a correct format.
Existing checks in rtl_fw_data_ok() are sufficient, no problems with
invalid firmware files are known.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169_firmware.c

@@ -151,9 +151,6 @@ void rtl_fw_write_firmware(struct rtl8169_private *tp, struct rtl_fw *rtl_fw)
 		u32 regno = (action & 0x0fff0000) >> 16;
 		enum rtl_fw_opcode opcode = action >> 28;
 
-		if (!action)
-			break;
-
 		switch (opcode) {
 		case PHY_READ:
 			predata = fw_read(tp, regno);