[PATCH] spi: spi-mem: Fix passing zero to 'PTR_ERR' warning

[YueHaibing]

Fix smatch warning:

drivers/spi/spi-mem.c:746 spi_mem_probe() warn: passing zero to 'PTR_ERR'

Fixes: 5d27a9c8ea9e ("spi: spi-mem: Extend the SPI mem interface to set a 
custom memory name")
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/spi/spi-mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index ef53290b7d24..a1b4d085834a 100644
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -743,7 +743,7 @@ static int spi_mem_probe(struct spi_device *spi)
                mem->name = dev_name(&spi->dev);
 
        if (IS_ERR_OR_NULL(mem->name))
-               return PTR_ERR(mem->name);
+               return PTR_ERR_OR_ZERO(mem->name);
 
        spi_set_drvdata(spi, mem);
 
-- 
2.17.1