i40evf/i40evf_main: Fix variable assignment in i40evf_parse_cls_flower

It seems this is a copy-paste error and that the proper variable to use
in this particular case is _src_ instead of _dst_.

Addresses-Coverity-ID: 1465282 ("Copy-paste error")
Fixes: 0075fa0f ("i40evf: Add support to apply cloud filters")
Signed-off-by: Gustavo A R Silva <garsilva@embeddedor.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/i40evf/i40evf_main.c

@@ -2749,7 +2749,7 @@ static int i40evf_parse_cls_flower(struct i40evf_adapter *adapter,
 
 		if (key->src) {
 			vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff);
-			vf->data.tcp_spec.src_port = key->dst;
+			vf->data.tcp_spec.src_port = key->src;
 		}
 	}
 	vf->field_flags = field_flags;