ice: fix error code in ice_eswitch_attach()

Set the "err" variable on this error path.

Fixes: fff292b ("ice: add VF representors one by one")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Link: https://lore.kernel.org/r/e0349ee5-76e6-4ff4-812f-4aa0d3f76ae7@moroto.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Dan Carpenter

drivers/net/ethernet/intel/ice/ice_eswitch.c

@@ -669,8 +669,10 @@ ice_eswitch_attach(struct ice_pf *pf, struct ice_vf *vf)
 	ice_eswitch_stop_reprs(pf);
 
 	repr = ice_repr_add_vf(vf);
-	if (IS_ERR(repr))
+	if (IS_ERR(repr)) {
+		err = PTR_ERR(repr);
 		goto err_create_repr;
+	}
 
 	err = ice_eswitch_setup_repr(pf, repr);
 	if (err)