ath9k: hif_usb: simplify if-if to if-else

[ Upstream commit 2950833f10cfa601813262e1d9c8473f9415681b ]

Use if and else instead of if(A) and if (!A).

Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220424094441.104937-1-wanjiabing@vivo.com


Stable-dep-of: 0af54343a762 ("wifi: ath9k: hif_usb: clean up skbs if ath9k_hif_usb_rx_stream() fails")
Signed-off-by: Sasha Levin <sashal@kernel.org>