mmc: meson-gx: fix deferred probing

The driver overrides the error codes and IRQ0 returned by platform_get_irq()
to -EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the error
codes upstream.  Since commit ce753ad ("platform: finally disallow IRQ0
in platform_get_irq() and its ilk") IRQ0 is no longer returned by those APIs,
so we now can safely ignore it...

Fixes: cbcaac6 ("mmc: meson-gx-mmc: Fix platform_get_irq's error checking")
Cc: [email protected] # v5.19+
Signed-off-by: Sergey Shtylyov <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>

Author: Sergey Shtylyov

drivers/mmc/host/meson-gx-mmc.c

@@ -1186,8 +1186,8 @@ static int meson_mmc_probe(struct platform_device *pdev)
 		return PTR_ERR(host->regs);
 
 	host->irq = platform_get_irq(pdev, 0);
-	if (host->irq <= 0)
-		return -EINVAL;
+	if (host->irq < 0)
+		return host->irq;
 
 	cd_irq = platform_get_irq_optional(pdev, 1);
 	mmc_gpio_set_cd_irq(mmc, cd_irq);