ath9k: Remove redundant NULL assignment

'bf_next' is cleared using ATH_TXBUF_RESET() in both the
callsites of ath_tx_get_buffer().

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
1 file changed