watchdog: pic32-wdt: Fix return value check in pic32_wdt_drv_probe()
In case of error, the function devm_kzalloc() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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