i3c: mipi-i3c-hci: Clear INTR_STATUS unconditionally

Status fields in INTR_STATUS register are write 1 to clear so do it
unconditionally and move clearing of them out of an if block.

Suggested-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250409140401.299251-3-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

Author: jhnikula

drivers/i3c/master/mipi-i3c-hci/core.c

@@ -590,12 +590,11 @@ static irqreturn_t i3c_hci_irq_handler(int irq, void *dev_id)
 	u32 val;
 
 	val = reg_read(INTR_STATUS);
+	reg_write(INTR_STATUS, val);
 	DBG("INTR_STATUS = %#x", val);
 
-	if (val) {
-		reg_write(INTR_STATUS, val);
+	if (val)
 		result = IRQ_HANDLED;
-	}
 
 	if (val & INTR_HC_RESET_CANCEL) {
 		DBG("cancelled reset");