tunables: don't assert initialisation in impl getters

It actually doesn't matter if it's not initialised when we first query
the current value; it just returns empty-string. A crash is quite
obnoxious even if it is a rare case.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Pavel Snajdr <snajpa@snajpa.net>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #17377

module/icp/algs/aes/aes_impl.c

@@ -420,8 +420,6 @@ icp_aes_impl_get(char *buffer, zfs_kernel_param_t *kp)
 	char *fmt;
 	const uint32_t impl = AES_IMPL_READ(icp_aes_impl);
 
-	ASSERT(aes_impl_initialized);
-
 	/* list mandatory options */
 	for (i = 0; i < ARRAY_SIZE(aes_impl_opts); i++) {
 		fmt = (impl == aes_impl_opts[i].sel) ? "[%s] " : "%s ";

module/icp/algs/modes/gcm.c

@@ -948,8 +948,6 @@ icp_gcm_impl_get(char *buffer, zfs_kernel_param_t *kp)
 	char *fmt;
 	const uint32_t impl = GCM_IMPL_READ(icp_gcm_impl);
 
-	ASSERT(gcm_impl_initialized);
-
 	/* list mandatory options */
 	for (i = 0; i < ARRAY_SIZE(gcm_impl_opts); i++) {
 #ifdef CAN_USE_GCM_ASM