memstick: suppress uninitialized-var warning

drivers/memstick/host/tifm_ms.c: In function 'tifm_ms_data_event':
drivers/memstick/host/tifm_ms.c:185: warning: 'p_off' may be used uninitialized in this function

Cc: Alex Dubov <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/memstick/host/tifm_ms.c

···
 	struct tifm_dev *sock = host->dev;
 	unsigned int length;
 	unsigned int off;
-	unsigned int t_size, p_off, p_cnt;
+	unsigned int t_size, p_cnt;
 	unsigned char *buf;
 	struct page *pg;
 	unsigned long flags = 0;
···
 		host->block_pos);
 
 	while (length) {
+		unsigned int uninitialized_var(p_off);
+
 		if (host->req->long_data) {
 			pg = nth_page(sg_page(&host->req->sg),
 				      off >> PAGE_SHIFT);