net: qede: use return from qede_parse_flow_attr() for flower

In qede_add_tc_flower_fltr(), when calling
qede_parse_flow_attr() then the return code
was only used for a non-zero check, and then
-EINVAL was returned.

qede_parse_flow_attr() can currently fail with:
* -EINVAL
* -EOPNOTSUPP
* -EPROTONOSUPPORT

This patch changes the code to use the actual
return code, not just return -EINVAL.

The blaimed commit introduced these functions.

Only compile tested.

Fixes: 2ce9c93 ("qede: Ingress tc flower offload (drop action) support.")
Signed-off-by: Asbjørn Sloth Tønnesen <ast@fiberby.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Asbjørn Sloth Tønnesen

drivers/net/ethernet/qlogic/qede/qede_filter.c

@@ -1879,10 +1879,9 @@ int qede_add_tc_flower_fltr(struct qede_dev *edev, __be16 proto,
 	}
 
 	/* parse flower attribute and prepare filter */
-	if (qede_parse_flow_attr(edev, proto, f->rule, &t)) {
-		rc = -EINVAL;
+	rc = qede_parse_flow_attr(edev, proto, f->rule, &t);
+	if (rc)
 		goto unlock;
-	}
 
 	/* Validate profile mode and number of filters */
 	if ((edev->arfs->filter_count && edev->arfs->mode != t.mode) ||