net: qed: remove redundant initialization of variable rc

The variable rc is being initialized with a value that is never read,
it is being updated later on.  The assignment is redundant and can be
removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qed/qed_iscsi.c

@@ -453,7 +453,7 @@ static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
 	struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
 	struct qed_spq_entry *p_ent = NULL;
 	struct qed_sp_init_data init_data;
-	int rc = -EINVAL;
+	int rc;
 	u32 dval;
 
 	/* Get SPQ entry */