cifs: Fix null pointer check in cifs_read

Coverity scan noted a redundant null check

Coverity-id: 728517
Reported-by: Coverity <[email protected]>
Signed-off-by: Steve French <[email protected]>
Reviewed-by: Shyam Prasad N <[email protected]>

Author: smfrench

fs/cifs/file.c

@@ -4060,7 +4060,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
 			 * than it negotiated since it will refuse the read
 			 * then.
 			 */
-			if ((tcon->ses) && !(tcon->ses->capabilities &
+			if (!(tcon->ses->capabilities &
 				tcon->ses->server->vals->cap_large_files)) {
 				current_read_size = min_t(uint,
 					current_read_size, CIFSMaxBufSize);