soundwire: cadence_master: balance parentheses

While not strictly necessary, balanced parentheses help with code
readability.

Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/soundwire/cadence_master.c

@@ -569,8 +569,9 @@ irqreturn_t sdw_cdns_irq(int irq, void *dev_id)
 					   cdns->defer->length, 0);
 			complete(&cdns->defer->complete);
 			cdns->defer = NULL;
-		} else
+		} else {
 			complete(&cdns->tx_complete);
+		}
 	}
 
 	if (int_status & CDNS_MCP_INT_CTRL_CLASH) {