regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone

ti_abb_wait_txdone() may return -ETIMEDOUT when ti_abb_check_txdone()
returns true in the latest iteration of the while loop because the timeout
value is abb->settling_time + 1. Similarly, ti_abb_clear_all_txdone() may
return -ETIMEDOUT when ti_abb_check_txdone() returns false in the latest
iteration of the while loop. Fix it.

Signed-off-by: Axel Lin <[e-mail]>
Acked-by: Nishanth Menon <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/ti-abb-regulator.c

···
 	while (timeout++ <= abb->settling_time) {
 		status = ti_abb_check_txdone(abb);
 		if (status)
-			break;
+			return 0;
 
 		udelay(1);
 	}
 
-	if (timeout > abb->settling_time) {
-		dev_warn_ratelimited(dev,
-				     "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
-				     __func__, timeout, readl(abb->int_base));
-		return -ETIMEDOUT;
-	}
-
-	return 0;
+	dev_warn_ratelimited(dev, "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
+			     __func__, timeout, readl(abb->int_base));
+	return -ETIMEDOUT;
 }
 
 /**
···
 
 		status = ti_abb_check_txdone(abb);
 		if (!status)
-			break;
+			return 0;
 
 		udelay(1);
 	}
 
-	if (timeout > abb->settling_time) {
-		dev_warn_ratelimited(dev,
-				     "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
-				     __func__, timeout, readl(abb->int_base));
-		return -ETIMEDOUT;
-	}
-
-	return 0;
+	dev_warn_ratelimited(dev, "%s:TRANXDONE timeout(%duS) int=0x%08x\n",
+			     __func__, timeout, readl(abb->int_base));
+	return -ETIMEDOUT;
 }
 
 /**