spi: sh-msiof: Use async pm_runtime_put() in sh_msiof_spi_setup()

There's no need to use the synchronous version.

Reported-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index c58c249..9a884e6 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -546,7 +546,7 @@
 		gpio_set_value(spi->cs_gpio, !(spi->mode & SPI_CS_HIGH));
 
 
-	pm_runtime_put_sync(&p->pdev->dev);
+	pm_runtime_put(&p->pdev->dev);
 
 	return 0;
 }