s: main; unmark __exit

WARNING: modpost:
/home/nabijaczleweli/uwu/unicode-oot/module/zfs.o(.init.text+0x342):
Section mismatch in reference from the function init_module() to the
function .exit.text:zcommon_fini()
The function __init init_module() references
a function __exit zcommon_fini().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
zcommon_fini() so it may be used outside an exit section.

module/icp/illumos-crypto.c

@@ -104,7 +104,7 @@
  * ZFS Makefiles.
  */
 
-void __exit
+void
 icp_fini(void)
 {
 	skein_mod_fini();

module/os/linux/zfs/zfs_ioctl_os.c

@@ -273,7 +273,7 @@ openzfs_fini_os(void)
 
 
 extern int __init zcommon_init(void);
-extern void __exit zcommon_fini(void);
+extern void zcommon_fini(void);
 
 static int __init
 openzfs_init(void)

module/zcommon/zfs_prop.c

@@ -1007,7 +1007,7 @@ EXPORT_SYMBOL(zfs_kfpu_fpregs);
 #endif /* defined(HAVE_KERNEL_FPU_INTERNAL) */
 
 extern int __init zcommon_init(void);
-extern void __exit zcommon_fini(void);
+extern void zcommon_fini(void);
 
 int __init
 zcommon_init(void)
@@ -1021,7 +1021,7 @@ zcommon_init(void)
 	return (0);
 }
 
-void __exit
+void
 zcommon_fini(void)
 {
 	fletcher_4_fini();

module/zstd/zfs_zstd.c

@@ -702,7 +702,7 @@ zstd_meminit(void)
 }
 
 /* Release object from pool and free memory */
-static void __exit
+static void
 release_pool(struct zstd_pool *pool)
 {
 	mutex_destroy(&pool->barrier);
@@ -712,7 +712,7 @@ release_pool(struct zstd_pool *pool)
 }
 
 /* Release memory pool objects */
-static void __exit
+static void
 zstd_mempool_deinit(void)
 {
 	for (int i = 0; i < ZSTD_POOL_MAX; i++) {
@@ -758,7 +758,7 @@ zstd_init(void)
 	return (0);
 }
 
-extern void __exit
+extern void
 zstd_fini(void)
 {
 	/* Deinitialize kstat */