ixgbe: Only clear adapter_stopped if ixgbe_setup_fc succeeded

A logic error here results in the adapter_stopped flag only being
cleared when ixgbe_setup_fc returns an error. Correct the logic.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_common.c

@@ -297,13 +297,13 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
 
 	/* Setup flow control */
 	ret_val = ixgbe_setup_fc(hw);
-	if (!ret_val)
-		return 0;
+	if (ret_val)
+		return ret_val;
 
 	/* Clear adapter stopped flag */
 	hw->adapter_stopped = false;
 
-	return ret_val;
+	return 0;
 }
 
 /**