sgv_pool_create(): Return NULL if sgv_pool_init() fails

The current implementation of sgv_pool_create() returns a dangling
pointer if pool allocation succeeds but sgv_pool_init() fails. Modify
sgv_pool_create() such that a NULL pointer is returned if that happens.
This was detected by Coverity.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@4756 d57e44dd-8a1f-0410-8b47-8ef2f437770f

scst/src/scst_mem.c

@@ -1670,6 +1670,7 @@ out_unlock:
 
 out_free:
 	kfree(pool);
+	pool = NULL;
 	goto out_unlock;
 }
 EXPORT_SYMBOL_GPL(sgv_pool_create);