spi: spi-fsl-dspi: Initialize completion before possible interrupt

The interrupt handler calls completion and is IRQ requested before the
completion is initialized.  Logically it should be the other way.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200622110543.5035-4-krzk@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-fsl-dspi.c

@@ -1389,15 +1389,15 @@ static int dspi_probe(struct platform_device *pdev)
 		goto poll_mode;
 	}
 
+	init_completion(&dspi->xfer_done);
+
 	ret = request_threaded_irq(dspi->irq, dspi_interrupt, NULL,
 				   IRQF_SHARED, pdev->name, dspi);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Unable to attach DSPI interrupt\n");
 		goto out_clk_put;
 	}
 
-	init_completion(&dspi->xfer_done);
-
 poll_mode:
 
 	if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) {