libahci: save port map for forced port map

In usecases where force_port_map is used saved_port_map is never set,
resulting in not programming the PORTS_IMPL register as part of initial
config. This patch fixes this by setting it to port_map even in case
where force_port_map is used, making it more inline with other parts of
the code.

Fixes: 566d1827df2e ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: [e-mail] # v4.5+
Signed-off-by: Srinivas Kandagatla <[e-mail]>
Acked-by: Tejun Heo <[e-mail]>
Reviewed-by: Andy Gross <[e-mail]>
Signed-off-by: Tejun Heo <[e-mail]>

drivers/ata/libahci.c

···
 		dev_info(dev, "forcing port_map 0x%x -> 0x%x\n",
 			 port_map, hpriv->force_port_map);
 		port_map = hpriv->force_port_map;
+		hpriv->saved_port_map = port_map;
 	}
 
 	if (hpriv->mask_port_map) {