Revert "net: mvmdio: avoid error message for optional IRQ"

This reverts commit e1f550d.
platform_get_irq_optional() will still return -ENXIO when no interrupt
is provided so the additional error handling caused the driver prone to
fail when no interrupt was specified. Revert the change so we can apply
the correct minimal fix.

Signed-off-by: Chris Packham <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: cpackham-atlnz

drivers/net/ethernet/marvell/mvmdio.c

@@ -347,7 +347,7 @@ static int orion_mdio_probe(struct platform_device *pdev)
 	}
 
 
-	dev->err_interrupt = platform_get_irq_optional(pdev, 0);
+	dev->err_interrupt = platform_get_irq(pdev, 0);
 	if (dev->err_interrupt > 0 &&
 	    resource_size(r) < MVMDIO_ERR_INT_MASK + 4) {
 		dev_err(&pdev->dev,
@@ -364,8 +364,8 @@ static int orion_mdio_probe(struct platform_device *pdev)
 		writel(MVMDIO_ERR_INT_SMI_DONE,
 			dev->regs + MVMDIO_ERR_INT_MASK);
 
-	} else if (dev->err_interrupt < 0) {
-		ret = dev->err_interrupt;
+	} else if (dev->err_interrupt == -EPROBE_DEFER) {
+		ret = -EPROBE_DEFER;
 		goto out_mdio;
 	}