iwlwifi: mvm: BT Coex - fix copy paste issue

Putting the context id of the primary phy context in
the placeholder of the secondary is obviously a bad
idea.
Spotted by smatch.

Fixes: dac94da8dba3 ("iwlwifi: mvm: new BT Coex API")
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/bt-coex.c b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
index 7444b2a..5d066cb 100644
--- a/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
+++ b/drivers/net/wireless/iwlwifi/mvm/bt-coex.c
@@ -755,7 +755,7 @@
 
 		cmd.bt_secondary_ci =
 			iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
-		cmd.secondary_ch_phy_id = *((u16 *)data.primary->drv_priv);
+		cmd.secondary_ch_phy_id = *((u16 *)data.secondary->drv_priv);
 	}
 
 	rcu_read_unlock();