spi: sg2044-nor: fix uninitialized variable in probe

The "base" pointer is uninitialized.  It should be "spifmc->io_base"
instead.

Fixes: de16c32 ("spi: sophgo: add SG2044 SPI NOR controller driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://patch.msgid.link/d343921b-16b8-429b-888a-f51bb6f2edc8@stanley.mountain
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Dan Carpenter

drivers/spi/spi-sg2044-nor.c

@@ -427,7 +427,6 @@ static int sg2044_spifmc_probe(struct platform_device *pdev)
 {
 	struct spi_controller *ctrl;
 	struct sg2044_spifmc *spifmc;
-	void __iomem *base;
 	int ret;
 
 	ctrl = devm_spi_alloc_host(&pdev->dev, sizeof(*spifmc));
@@ -447,8 +446,8 @@ static int sg2044_spifmc_probe(struct platform_device *pdev)
 	spifmc->ctrl = ctrl;
 
 	spifmc->io_base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(base))
-		return PTR_ERR(base);
+	if (IS_ERR(spifmc->io_base))
+		return PTR_ERR(spifmc->io_base);
 
 	ctrl->num_chipselect = 1;
 	ctrl->dev.of_node = pdev->dev.of_node;