SYSLINK: ipc - remove a WARN_ON in sharedregion module

This patch removes an unnecessary WARN_ON in sharedregion_get_ptr
function. The WARN_ON is caused when a INVALID_SRPTR value is passed
into the function, which is a valid argument.
Signed-off-by: Suman Anna <s-anna@ti.com>

drivers/dsp/syslink/multicore_ipc/sharedregion.c

@@ -372,7 +372,7 @@ void *sharedregion_get_ptr(u32 *srptr)
 	if (WARN_ON(sharedregion_state.table == NULL))
 		goto error;
 
-	if (WARN_ON(srptr == SHAREDREGION_INVALIDSRPTR))
+	if (srptr == SHAREDREGION_INVALIDSRPTR)
 		goto error;
 
 	myproc_id = multiproc_get_id(NULL);