drivers: uart_nrfx_uarte: Remove redundant HW_RX_COUNTING_ENABLED calls

Merge three adjacent `if (HW_RX_COUNTING_ENABLED(data))` blocks into
a common one.

Signed-off-by: Andrzej Głąbek <[email protected]>

Author: anangl

drivers/serial/uart_nrfx_uarte.c

@@ -662,19 +662,15 @@ static int uarte_nrfx_rx_counting_init(const struct device *dev)
 			nrfx_timer_enable(&cfg->timer);
 			nrfx_timer_clear(&cfg->timer);
 		}
-	}
 
-	if (HW_RX_COUNTING_ENABLED(data)) {
 		ret = gppi_channel_alloc(&data->async->rx_cnt.ppi);
 		if (ret != NRFX_SUCCESS) {
 			LOG_ERR("Failed to allocate PPI Channel, "
 				"switching to software byte counting.");
 			data->async->hw_rx_counting = false;
 			nrfx_timer_uninit(&cfg->timer);
 		}
-	}
 
-	if (HW_RX_COUNTING_ENABLED(data)) {
 #if CONFIG_HAS_HW_NRF_PPI
 		ret = nrfx_ppi_channel_assign(
 			data->async->rx_cnt.ppi,