ixgbe: fix __ixgbe_notify_dca() bail out code

The way __ixgbe_notify_dca() was currently set up it would not be
possible to add a requester. Both cases of the IXGBE_FLAG_DCA_ENABLED
bit being on and off would lead to the function exiting for a
DCA_PROVIDER_ADD.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 26b132b..e86297b 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -1006,7 +1006,7 @@
 	struct ixgbe_adapter *adapter = dev_get_drvdata(dev);
 	unsigned long event = *(unsigned long *)data;
 
-	if (!(adapter->flags & IXGBE_FLAG_DCA_ENABLED))
+	if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE))
 		return 0;
 
 	switch (event) {