power: supply: bq256xx: Handle OOM correctly

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2071846
Tested: This is one of a series of patch sets to enable Arm SystemReady IR
 support in the kernel for NXP i.MX8 platforms.  This set updates the
 power subsystem.  This set has been tested via simple boot tests and
 the CI loop.

commit f444578
Author: Linus Walleij <linus.walleij@linaro.org>
Date:   Mon Jan 10 16:50:07 2022 +0100

    power: supply: bq256xx: Handle OOM correctly

    Since we now return a pointer to an allocated object we need
    to account for memory allocation failure in a separate
    error path.

    Fixes: 25fd330 ("power: supply_core: Pass pointer to battery info")
    Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
    Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
    Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
    (cherry picked from commit f444578)

Signed-off-by: Al Stone <ahs3@redhat.com>

Author: Al Stone

drivers/power/supply/bq256xx_charger.c

@@ -1523,6 +1523,9 @@ static int bq256xx_hw_init(struct bq256xx_device *bq)
 						BQ256XX_WDT_BIT_SHIFT);
 
 	ret = power_supply_get_battery_info(bq->charger, &bat_info);
+	if (ret == -ENOMEM)
+		return ret;
+
 	if (ret) {
 		dev_warn(bq->dev, "battery info missing, default values will be applied\n");