skge: Unmask interrupts in case of spurious interrupts

In case of a spurious interrupt dont forget to reenable the interrupts that
have been masked by reading the interrupt source register.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Acked-by: Mirko Lindner <mlindner@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/skge.c

@@ -3433,10 +3433,9 @@ static irqreturn_t skge_intr(int irq, void *dev_id)
 
 	if (status & IS_HW_ERR)
 		skge_error_irq(hw);
-
+out:
 	skge_write32(hw, B0_IMSK, hw->intr_mask);
 	skge_read32(hw, B0_IMSK);
-out:
 	spin_unlock(&hw->hw_lock);
 
 	return IRQ_RETVAL(handled);