ath9k: Remove unnecessary print function dev_err()

The print function dev_err() is redundant because
platform_get_irq_byname() already prints an error.

Eliminate the follow coccicheck warning:
./drivers/net/wireless/ath/ath9k/ahb.c:103:2-9: line 103 is redundant
because platform_get_irq() already prints an error
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220408000113.129906-2-yang.lee@linux.alibaba.com

drivers/net/wireless/ath/ath9k/ahb.c

@@ -99,10 +99,8 @@ static int ath_ahb_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "no IRQ resource found\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	ath9k_fill_chanctx_ops();
 	hw = ieee80211_alloc_hw(sizeof(struct ath_softc), &ath9k_ops);