spi: spidev: Fix double unlock in spidev_sync()

This unlocks twice due to a merge issue.

Fixes: 35bba23e ("Merge remote-tracking branch 'spi/for-6.2' into spi-6.2")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/Y+ETCk7XKfAy8yWQ@kiliSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spidev.c

@@ -115,8 +115,6 @@ spidev_sync(struct spidev_data *spidev, struct spi_message *message)
 	else
 		status = spidev_sync_unlocked(spi, message);
 
-	mutex_unlock(&spidev->spi_lock);
-
 	mutex_unlock(&spidev->spi_lock);
 	return status;
 }