mfd: pm8921: Potential NULL dereference in pm8921_remove()

commit d6daef95 upstream.

We assume that "pmic" could be NULL and then dereference it two lines
later.  I fix this by moving the dereference inside the NULL check.

Fixes: c013f0a5 ('mfd: Add pm8xxx irq support')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

drivers/mfd/pm8921-core.c

@@ -171,11 +171,12 @@ static int pm8921_remove(struct platform_device *pdev)
 	drvdata = platform_get_drvdata(pdev);
 	if (drvdata)
 		pmic = drvdata->pm_chip_data;
-	if (pmic)
+	if (pmic) {
 		mfd_remove_devices(pmic->dev);
-	if (pmic->irq_chip) {
-		pm8xxx_irq_exit(pmic->irq_chip);
-		pmic->irq_chip = NULL;
+		if (pmic->irq_chip) {
+			pm8xxx_irq_exit(pmic->irq_chip);
+			pmic->irq_chip = NULL;
+		}
 	}
 
 	return 0;