main: Simplify sim_auth_init

There's no real reason why sim_auth_init should fail, so simplify the
procedure and move declarations to iwd.h

src/iwd.h

@@ -34,3 +34,6 @@ void iwd_shutdown(void);
 
 void network_init();
 void network_exit();
+
+void sim_auth_init(void);
+void sim_auth_exit(void);

src/main.c

@@ -409,12 +409,6 @@ int main(int argc, char *argv[])
 		goto done;
 	}
 
-	if (!sim_auth_init()) {
-		l_error("Failed to start sim auth module");
-		exit_status = EXIT_FAILURE;
-		goto done;
-	}
-
 	plugin_init(plugins, noplugins);
 
 	genl = l_genl_new_default();
@@ -455,10 +449,12 @@ int main(int argc, char *argv[])
 	network_init();
 	known_networks_init();
 	rfkill_init();
+	sim_auth_init();
 
 	exit_status = EXIT_SUCCESS;
 	l_main_run();
 
+	sim_auth_exit();
 	rfkill_exit();
 	known_networks_exit();
 	network_exit();
@@ -466,7 +462,6 @@ int main(int argc, char *argv[])
 	eapol_exit();
 	eap_exit();
 	plugin_exit();
-	sim_auth_exit();
 
 	l_genl_family_unref(nl80211);
 

src/simauth.c

@@ -25,6 +25,7 @@
 #include <errno.h>
 #include <ell/ell.h>
 
+#include "iwd.h"
 #include "watchlist.h"
 #include "simauth.h"
 
@@ -174,14 +175,9 @@ void sim_auth_cancel_request(struct iwd_sim_auth *auth, int id)
 		auth->driver->cancel_request(auth, id);
 }
 
-bool sim_auth_init(void)
+void sim_auth_init(void)
 {
 	auth_providers = l_queue_new();
-
-	if (!auth_providers)
-		return false;
-
-	return true;
 }
 
 void sim_auth_exit(void)

src/simauth.h

@@ -147,7 +147,3 @@ int sim_auth_run_gsm(struct iwd_sim_auth *auth, const uint8_t *rands,
 		int num_rands, sim_auth_run_gsm_cb_t cb, void *data);
 
 void sim_auth_cancel_request(struct iwd_sim_auth *auth, int id);
-
-bool sim_auth_init(void);
-
-void sim_auth_exit(void);