hw/9pfs: Update the fidp path before opendir

We need to update the fidp path before opendir. Since we don't
use the fid returned by mkdir, earlier code should not have
much issue. We do a double v9fs_string_copy here. The later patch
cleanup the entire function.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

hw/9pfs/virtio-9p.c

@@ -2106,6 +2106,7 @@ static void v9fs_create(void *opaque)
         if (err < 0) {
             goto out;
         }
+        v9fs_string_copy(&fidp->path, &fullname);
         err = v9fs_co_opendir(pdu->s, fidp);
         if (err < 0) {
             goto out;